Regardless of whether this is legal or not, I think this move is subjectively scummy. I know that profit maximisation means going against common ideas of what is "a nice thing to do", but there's a line that's been crossed here between "the business has to support itself" and "trying to exploit and milk our customers".

Honestly, if storage costs were an issue, I would have preferred they delete it with notification than sell hope at a ransom.

Wonder if there any startups that have grown without resorting to these low blow tactics - just the idealised free market of "we provide such a good service that you're willing to pay us our fair price".