Google is essentially hijacking the web and turning it into something that it can entirely control and dictate, since Google owns not only critical infrastructure (Chromium, the most used browser), but the most visited websites (Youtube, Search). That's a coup d'état, no more no less.
And the slippery slope is abrupt dude, we went from EME which was already spyware to WEI, and there will be a next step, since we would have already accepted Google's supremacy.