Fundamentals

Innovation and Competition: When Rivalry Drives Improvement

By Daniel Sardá · Published on September 24, 2026

6 min read1,295 words

Rivalry can speed up improvement, but innovation also takes time, investment, and a reasonable prospect of return. The key is keeping challenge open.

One company launches a simpler, less expensive product. Its rival, which has sold largely unchanged offerings for years, improves its own product and shortens delivery times. Soon afterward, other firms adopt some of those improvements. Was competition what produced the innovation?

The short answer is: it can encourage it, but not automatically. Rivalry requires firms to pay attention to consumers and creates room for new solutions to displace older ones. At the same time, innovation is costly, risky, and dependent on some prospect of return. Ignore either force—the competitive challenge or the incentive to invest—and the relationship is misunderstood.

Key idea: Competition supports innovation when a firm can win customers by improving and also risks losing them if it stops improving.

Innovation is more than having an idea

An invention can remain in a laboratory, a notebook, or a prototype. Innovation, by contrast, is put to use. The OECD and Eurostat’s Oslo Manual 2018 defines business innovation as a new or improved product or process that differs significantly from previous ones and has been introduced to the market or brought into use by the organization.

That distinction matters because an economy does not change simply when ideas appear. It changes when someone tests them, turns them into useful products or processes, and allows them to spread. Economic innovation therefore includes far more than patents or digital technology: it can also mean a different way to organize deliveries, reduce waste, or serve users better.

Nor does competition simply mean counting firms. Effective competition exists when producers must respond to real or potential alternatives: another supplier may attract their customers, a new entrant may try a different method, or buyers may reject an offer that no longer serves them. What matters is rivalry and the possibility of challenge, not a structure with a predetermined number of participants.

How rivalry opens paths to innovation

Competition works through several mechanisms. First, it penalizes complacency: if one firm does not improve its price, quality, or service, another may do so. Second, it permits experimentation. Different participants can test solutions without an authority deciding in advance which one will work. Third, it conveys information: consumers’ choices reveal which improvements they value and which do not justify their cost.

Consider an established firm using a slow process. A new competitor tests another one that reduces delays. The entrant may gain customers; the incumbent has reason to respond; and third parties can learn from the change. Success is not guaranteed, but the process is one of discovery in which decisions are dispersed.

The possibility of entry can matter even before a new rival appears. A firm that knows others may enter has reason not to take its customers for granted. Mateo Silos Ribas’s review of competition and innovation identifies contestability—the possibility of entry and expansion—as a central factor in the debate.

Innovation also requires a way to recoup investment

Competitive pressure is only part of the story. Developing and implementing an improvement requires resources today in exchange for uncertain benefits tomorrow. Some attempts fail. Others work but are imitated. Without a reasonable chance to capture part of the value created, some investments may never be made.

Economists call the innovator’s ability to earn returns from an innovation appropriability. It does not mean an innovator should be shielded from all competition, nor that every form of exclusivity is justified. It means that economic incentives depend on the expected reward as well as cost and risk.

This creates a genuine tension. Diffusion lets more people benefit from an improvement and enables other firms to build on it. But immediate, costless copying can reduce the expected return on the original effort. Conversely, excessive protection can inhibit entry, adaptation, and later innovation. No single answer fits every sector: development costs, ease of imitation, financing, network effects, and applicable rules all matter. The OECD highlights precisely how such factors shape the relationship.

Key idea: Preserving incentives to innovate does not require insulating innovators from challenge; it requires a path to returns without turning an advantage into a permanent barrier.

Concentration is not the same as an absence of competition

A market with many firms can be sluggish if rules, licensing requirements, or artificial costs prevent experimentation. And a market with few participants can retain intense rivalry if customers can switch providers and entry or expansion remains a credible possibility.

Concentration is therefore a structural fact, not a verdict. Market power refers to the ability to act with little competitive discipline for a meaningful period. To assess innovation, it is also worth asking who can enter, what resources they need, whether users are locked in, and what obstacles prevent an alternative from growing.

This qualification does not make firm size irrelevant. A large company may finance costly research, scale a solution, or bring complementary capabilities together. It may also try to close channels, raise barriers, or use public rules to protect itself. Size or past success alone does not settle the analysis.

Economic evidence counsels against simple formulas. The well-known study by Philippe Aghion and coauthors on an inverted-U relationship found that, in the British manufacturing industries it examined, the relationship between competition and innovation could be nonlinear. It is not a universal law, but it is a useful warning: claiming that “more competition always produces more innovation” erases conditions that matter.

Innovative advantage and the anticompetitive barrier

A successful innovation can differentiate a product, lower costs, and give its creator a temporary advantage. That advantage is part of the reward for serving consumers better. It is not, by itself, an anticompetitive restraint.

The relevant question is how the advantage was gained and how it is maintained. Keeping customers because an offering remains superior is not the same as preventing challenge through privileges, exclusion, or barriers unrelated to the merit of the improvement. Nor is leadership that others can contest the same as a legal monopoly that prohibits competition.

That distinction also guides competition policy. Antitrust analysis should not mechanically punish success or assume that all concentration is harmless. It should examine effects and conditions: whether conduct protects legitimate investment, forecloses entry, blocks diffusion, or reduces others’ ability to innovate. As Richard Tepper Maturana explains in his study of innovation and antitrust, the relationship is complex, and innovations by incumbents and entrants raise different issues.

Key idea: A position earned through improvement and a position insulated from challenge may look alike in a snapshot; their dynamic effects differ.

Which institutions support both forces

An innovative society need not choose between competition and returns. It needs rules that allow people to seek profits through improvement while keeping open the possibility of contesting those profits. Important conditions include:

• freedom of entry and expansion, without permits or privileges designed to protect incumbents;
• predictable property rights and contracts, so people can invest and cooperate under known rules;
• consumers’ access to information and alternatives, with switching costs that are not artificial;
• careful assessment of restrictions, with attention to their effects on investment, entry, and diffusion.

From a liberal perspective, competition is not an instruction for every market to have the same shape. It is an open process: people can experiment, exchange, learn, and challenge existing solutions. The role of institutions is to protect that openness, not to choose the winner in advance or preserve whoever already holds a position.

Innovation flourishes when improvement offers a reward but standing still carries a cost. That balance is never permanently secured. It depends on innovators being able to reap, for a time, what they create—and on no one, whether a firm or a government, closing off the next attempt to do better.