it's really not complicated, i'm running a git host on my mini pc using a cheap VPS that cost me 35 euros for a whole year with a reverse proxy that i modded to do nip-05 and it routes inbound traffic to domains and subdomains to endpoints on a wireguard subnet

it only takes me about an hour to set this up manually and i can imagine writing tools that automate it and then add a shopfront and account management interface for the service provider and integrate a wireguard client into your client interfacing, with a handy simple installer that just makes it work and all you have to do is direct it to your host with your npub and voila

and yes, the point is that because the asshats at the IETF etc and all the big telcos who want to do their service as faux internet providers for the Con don't want people hosting their own services they have been marketing this snake oil for decades and never do anything about it

but wireguard+dns+reverse proxy does all of that and the centralisation is only small compared to facebook or twatter