One of the things that led to Google's current dominance is folks like us (certainly me, at least) pushing folks to replace their default IE installation with Chrome as soon as they set up a new computer.
I hope, pragmatically, something similar might happen with this: say that Brave (my daily driver) disables WEI in their Chromium build, and a new Chromium-derived browser surges in popularity... like judo, using their own power against them.
In the last few years (or in the first few), not much. But there was a time where Firefox was difficult to recommend for performance reasons - I think it's right when they switched XUL iirc. To me that's what afforded the then-competition (Opera, Safari, Chrome) to start to eat the market share. It's why I switched to Chrome for a while (before everything was Chrome).
I hope, pragmatically, something similar might happen with this: say that Brave (my daily driver) disables WEI in their Chromium build, and a new Chromium-derived browser surges in popularity... like judo, using their own power against them.