The closest to your dream is probably https://hexos.com/
It is closed source, but build on top of open source...
They (for now) have a one time purchase license, no subscription.
It has buddy backups. Can run on any normal x86 pc / server (you have to bring your own and install hexos to it). And has a nice and simple GUI for deploying services easily.
I never personally used it. I just have it on my radar. For me, the not so easy but fully free (cost) and open source way works reasonably well. I run my homelab with dokploy.