Yes, Umbrel OS is on GitHub and you can already run it on generic NUCs / Pi etc. That’s great. But the value prop of the hardware is the whole bundle: curated apps, painless updates, maybe remote access, maybe backups. If Umbrel-the-company pivots or withers, the repo still being there under a non-commercial license doesn’t guarantee ongoing maintenance, an app store, or support. And the NC clause is exactly what makes it hard for someone else to step in and sell a fully supported forked “Umbrel but maintained” box to non-technical users. So for people like you and me, sure, we can just install it elsewhere; for the target audience of an expensive plug-and-play box, the long-term social contract is still the fragile part.
I also run Cloudron on a VPS.
I wish both of those solutions had more mindshare. They save me so much time and effort. Especially Cloudron!
Install ≠ operate
If so, couldn't you just use the OS on non-premium-priced mini-PC hardware and never have to worry about them locking you out of your box? I guess maybe it's concerning if you're being forced to update by the OS? I've never actually run a system like that, but was considering umbrel OS (didn't actually know about the hardware until this post), so if I'm being naive about something, it's in earnest.
[0] https://github.com/getumbrel/umbrel