The bottom line is, which web sites are going to cut you off, because you aren't using an official browser or whatever?
A question for an answer: how many websites are now 100% reliant on Google's javascript framework APIs? That 500Mb analytics bloat that makes sites unresponsive. I argue that by requiring web browsers to be complaint with the latest incarnation of Javascript [web standards driven by Google], then we are already in a place where Google's control of websites is happening.
For example, my Chrome browsers on older Android devices, which are not upgradable thanks to Google's planed OS obsolescence, mangle websites due to their incompatibility with the latest 'framework features' as deployed in the bandwidth bloat. I know the reason why pages do not render or break in the middle of transactions, but most regular folks don't. They just think they are at fault, and need to upgrade to the newest shiny box.
Then there are the web-apps, which are just websites masquerading as apps in a fancy UI wrapper. Apps that for some reason need privileged access to the owners contacts, camera and location, just to function as a regular web page?
I should add that the EEVblog renders perfectly, even with 'antique' browsers - so kudos to Dave et.al.

Extrapolating... If a user proves to Google they are human then, that user has immutable human rights. Rights which include
digital rights. Put in a more controversial way, since the abolition of slavery, human beings ceased to be a commodity, so why is our personal data so profitable?
The future is already here, it's just that most people missed the arrival.