I'm still thinking maybe they should do something similar again, but with decentralised social media, like they still do with email and used to do with Usenet.
Back in the early days, a Usenet server represented a natural community - a university or employer. The early regional ISPs like Panix were small enough to still be community-like, though the common bond was looser. Modern ISPs, your Comcasts and Verizons, aren't communities at all, any more than customers of any other large business are. So although from a technological standpoint it makes sense to organize user-facing decentralized services on an ISP basis, from a social perspective it really doesn't anymore.