I could walk away from Fastspring any day (I don't have subscriptions). I guess the most important part is that everything would need to happen on my domains;

I could walk away from Fastspring any day (I don't have subscriptions). I guess the most important part is that everything would need to happen on my domains; there can't be any other people's domains in my code (eg update checking), that would make me too dependent. I don't care about on-premise or self-hosting or cloud or whatever. I care about lock-in. I plan to keep my company around for many years. At some point some of the services I use will go away or get too expensive or become crappy or whatever. That goes for web hosting, SVN hosting, mail server, payment provider, etc. That's why they need to be interchangeable. I pay for services that add convenience; I don't pay for services that lock me in.