Would that help in a case like this?
In order for that to be useful, you’d have to have tried moving to your new provider before your old provider locked your account and denied access to all of its contents via every API access method. You might say that you should make backups, but the one plausible genuine selling point of storing your data on Other People’s Computers is that they take care of that so you don’t have to.
But also, it kind of suggests that customers would be able to make meaningful decisions over which Clown provider to choose, based on them not booting you out if they find innocuous pictures of your kid that you took for the doctor, or in the bath, or whatever. But it seems more likely to me that those providers would compete with each other on how aggressively they’d protect your kids online from predators, which sounds like something you want… until you realise too late that that actually means them yes actually booting you off when they find those pictures, and now you’re screwed again.
I think some kind of utility-like regulation regarding protection against having your service cancelled without warning, before you have a chance to line up another provider, is a necessity. That’s not to say mandatory interoperability isn’t a good idea - I think it really is. But I don’t think it’s enough.
