I agree. In fact, i like it when new products/services offer the option to self-host for free (because code is open source), as well as the option where I can pay them to host it for me (along with a little included support). In my mind, companies that don't offer both, sort of get lumped in with the googles, microsofts, apples, facebooks, snapchats, etc. of the world. Much like other commentaries, I'm not assuming automatic nefarious behavior, but providing options like i noted above, sure goes a long way in building confidence and happy customer relations.
I'd be much more interested in running my own backend, than frontend db. Yeah, I'm a control freak, I guess. But at least my data stays mine.