The very things that made large firms strong, layers of coordination, massive headcounts, deep process libraries, are now impediments.
A $5 billion company cannot rearchitect its ERP overnight. A $15 million company can build a custom data model, deploy agents against its core workflows, and iterate in weeks.
The World Economic Forum profiled AI-first startups in early 2026 running lean teams of fewer than ten people across hundreds of agents spanning full operational functions.
The structural advantage is speed, proximity to real problems, and the absence of legacy process debt.