There are a whole spectrum of options between "running a mail server in your basement" and "having to reprint your business cards if your Google account is susp

There are a whole spectrum of options between "running a mail server in your basement" and "having to reprint your business cards if your Google account is suspended". We can make big steps towards trustworthiness and control in SaaS, it's just often orthogonal to profitability. Lock-in is the obvious example. Lots of vendors expend huge efforts to simplify data ingress, but create arbitrary obstacles to data egress. We worry about SaaS providers going bust because we're inured to the idea that getting your data back is really difficult. The interests of the user do not align with the interests of the vendor. Predatory practices are so normal that we've half-forgotten that they're predatory.