The web today is a rotting carcass with various middlemen maggots crawling all over it and gorging themselves on the decay. The only real discussion to be had is what to replace it with and how to design the new protocols to avoid the same issues.
From advertising companies, search engines (ok, sometimes both), certificate peddlers and other 'service' (I use the term lightly here) providers there are just too many of these maggots that we don't actually need. We mostly need them to manage the maggots! If they would all fuck off the web would instantly be a better place.
Desktop app development gets increasingly hostile and OSes introduce more and more TCC modals, you pretty much need a certificate to codesign an app if you sideload (and app stores have a lot of hassle involved), mobile clients had it bad for a while (and just announced that Android will require a dev certificate for sideloading as well).
edit: also another comment is correct, the reason it is like that is because it has the most eyes on it. In the past it was on desktop apps, which made them worse
But it seems apparent to me that it will have to work over HTTP/QUIC, and TCP port 443.
Which prompts the obvious question ...
The question I was alluding to is: if it's HTTP-ish over tcp/443, wouldn't it still be the web anyway?
But thinking about it more, the server could easily select a protocol based on the first chunk of the client request. And the example of RTP suggests that maybe even TCP would be optional.