After some research, Crashplan Business still seems like a good deal. Crashplan Home was just a fantastic, market-beating deal. Folks like those at r\Datahoarder that were getting cheap storage for 40+ TB probably ruined it for us. A lot of alternatives aren't unlimited, or like Backblaze and others, have limited file retention and file versioning.
SpiderOak is an option for many, and I keep paying because I managed to snag an unlimited account during a limited time offer they ran, but I barely use it. The app is lousy and after catching it several times not updating a handful of files I lost a bit of confidence. But, if someone brings a docker in house, I'll probably give it a shot. Maybe under linux it's more reliable.
If not, Crashplan Business it is...
Also, syncthing has a docker too, I use that to backup some work files to UNRAID for Crashplan to then send to the cloud. Clunky but reliable so far. Syncovery may be superior, haven't tried it.
EDIT: SpiderOak could probably run in a VM as well, but I hate to add the overhead of a VM just for SO.