> and build a business as the premier support consultants without most of the original developer's startup costs
I think a real world example for this would be https://www.collaboraoffice.com/about-us/. And looking at it from the outside a positive example as well. At least I could not find any public beef between collabora and the document foundation (as the organisation behind libreoffice).
The one big plus for ucs is their samba server, but it's not the right choice if you are looking for an appstore to install apps from.
My personal favorite is Cloudron, as they have an app concept that only needs minimal human maintenance. And you could even combine it with an LDAP server like ucs for the user management.
I think a real world example for this would be https://www.collaboraoffice.com/about-us/. And looking at it from the outside a positive example as well. At least I could not find any public beef between collabora and the document foundation (as the organisation behind libreoffice).