Who provides resources to the Es and Ds? Who hires new ones? Who raises money from investors and banks, and ensures you have cash flow and ROI? How do you manage 100 Es and Ds without a PM?

Small teams are more efficient but (obviously) can't produce at scale. When you scale up, there's enough HR or finance or marketing, or PM, etc. work for full-time specialists. And larger orgs need bureaucracy - if you have a way around that, the world is yours.

What you call scaling up sounds more like monetization. Others (especially customers) might call it enshittification instead. Youtube is a great example of how bad it can get.

Why Mozilla won't let people financially contribute directly to Firefox development and continues to pursue these stupid monetization paths is a mystery.