Ben Horowitz on AI Infrastructure, Economics and The New Laws of Software

Ben Horowitz argues that AI has overturned two foundational laws of software: the impossibility of buying your way out of engineering problems and the strength of customer lock-in moats. With enough GPUs and data, companies can now compress years of development into weeks, eroding traditional advantages held by incumbents. He also contends that human ingenuity will continue to create new needs, driving progress despite the disruptive transition.

It reframes the strategic foundations of software competition in the AI era, exposing which moats are gone and what kinds of value still matter.

1. 01The 'mythical man-month' principle no longer applies—sufficient capital, GPUs, and data can rapidly overcome software development delays.
2. 02Traditional software moats like customer lock-in, data ownership, and UI familiarity are dissolving in the face of AI agents that can easily replicate functionality and migrate data.
3. 03Legacy companies must honestly assess their defensible value—such as deep industry relationships or complex integration networks—rather than relying on outdated assumptions of durability.