What about other apis such as web notifications or webcam and mic access? With separate domains we could allow notifications for one (e.g calendar) and disallo

What about other apis such as web notifications or webcam and mic access? With separate domains we could allow notifications for one (e.g calendar) and disallow for another (e.g mail) at the browser level. Seems like it would now be a blanket allow for all of google.com (with a toggle for each product setting, maybe?) which sounds like a very user hostile move. I guess it depends if one considers Google products to be separate apps or Google as a whole to be a "Web OS". (Also on the technical side there's not just google.com but also google.<2 letter country TLD>, which is even worse in terms of CORS, certs, or whatever. Would they get rid of that?)