This is the business model I want to have: I work on a stack of fully open source software and package them in a turn-key server that you own. You can use it on your own for free if you’re knowledgeable and I offer a subscription where I’m the sysadmin of the box you own and that I built for you. I do the maintenance, the updates, etc. There’s no lock-in because you can stop the subscription anytime or even just pick another sysadmin that would know the stack. The only reason you’d keep me around would be that the service I offer is pretty damn good. Would something like that appeal to you?