[chaostheory]

You make a photo app where backing up your pictures online costs a small subscription fee per month. It’s only free if you only use the native client storing your media locally.

It cannot work if it’s a free service unless the entity running it is a non-profit ie a private VC funded entity will eventually sell or share your data.

To my knowledge, only Apple has made something like this but it only works best on their platform which limits it.