Claim
People keep using AI to do the existing job 2x faster. That's not the win. The win is that the function rebuilds around the substrate — PMM and design and content and competitive aren't separate roles anymore, they're loops on the same data layer that one person plus a model can run. The org chart goes from 7 PMMs to 2 super-ICs and a flywheel. The metric that matters is revenue per employee, not headcount.
Mechanism
Speedup compounds linearly. Collapse compounds quadratically because every adjacent role you absorb removes a coordination tax. The first AI-native PMM at a company displaces three layers of process. The seventh one fights for budget.