> Now mobile providers and some ISP play gatekeeper … don’t allow you to keep any IPv6 devices (rotate assignments) so we end up with little benefit to the end consumer.
I see this as a feature not a bug. Use dynamic DNS if you need a stable endpoint here.
> The idea that a home user ca setup a desktop and share anything I want via IPV6 another person without the need for a middle man “cloud” provider just didn’t happen.
You can, you likely just need to change the default firewall settings on a typical ISP provided router.
> Corporate greed / government control have severely limited any usefulness of IPv6 at least here in the US
I don't see how either of those have to do with this.