Independent browser engine developers have a say in how web standards evolve. their influence is limited of course, but they use it to keep web open. Google have long been trying to integrate more “advanced” advertisement and data collection technologies directly in web browsers (including imposing it on non-Chromium browser through “open” web standards).

The moment Google has full control of technologies involved they will do everything in their power to make ad blockers technically impossible (or at least extremely complicated and inefficient) and data collection mandatory, integrated directly in Chromium. And they will do so in such a way that most websites will simply not work on Chromium forks with these “features” disabled, so everyone will be forced to comply.