They're totally happy with renting out space that they paid (and pay) nothing for, for prices like 1 USD per month. Why would they help move to IPv6? Not happening. Short term solution to this is the obvious: force everyone not using their space to hand it over. What you can't use for 5 years into the future should just be handed back. Ban large ISPs from charging for IPv4 addresses to their downlinks.
@peter I agree about the centralization of internet services, and it could probably be the reason for slow IPv6 adoption. Bitcoin is at least decentralized, and really looks promising compared to the hyperinflation of western currencies.
Internet protocol is all about routing and transferring, it says nothing for authenticity or integrity so the question of who owns it is only relevant when it comes to gatekeeping and rent-seeking routability... By my estimation, its already possible to use software to defeat this routability rent-seeking as long as the protocols you are using have been updated since the 80s and 90s (they are wrapped in TLS OR they can tolerate alternative ports).
Honestly, usability/ease of use/maintainability is the primary problem that potential server operators face. It would be nice to have more ips, like with IPV6, but that's not going to make it easier for folks to host servers safely and reliably. How do you expect my mother to understand both numbers AND letters for her server's address!? 😲😲
IMO its more scary that mobile networks (most internet users) tend to employ symmetric NAT & most mobile device computing is purely consumption oriented as a result, making mobile production impossible.