Technological Lock-In

Technological lock-in occurs when a technology or standard becomes so entrenched in a system that switching to an alternative becomes prohibitively expensive, even when the alternative is technically superior. The phenomenon is a direct consequence of path dependence in markets with network effects: early adoption decisions, once made, are reinforced by complementary investments, learning effects, and coordination dynamics that raise the cost of deviation over time. The QWERTY keyboard, the internal combustion engine, and proprietary software ecosystems are all frequently cited examples — though critics argue that some alleged cases of lock-in are better explained by continuous incremental improvement of the dominant technology rather than by pure path dependence.

The policy relevance of technological lock-in is acute in domains where the locked-in technology produces negative externalities that the market does not price. The fossil fuel energy system is the largest-scale example: the infrastructure, institutions, and geopolitical arrangements built around hydrocarbons constitute a lock-in that may be more costly to break than the climate damage it causes. Understanding when lock-in is genuine and when it is merely a convenient excuse for incumbents is one of the central problems in technology policy.