data backups: this point is moot because, who cares about archived email? that's like 1% of the pain of loosing an account. 99% of the problem is the messages you will never be able to read.

Same with the youtube channel from OP. i'm 100% certain that the guy has all his videos ready for re-upload. but who cares? He had worked hard promoting that channel in several venues and acquiring an audience to THAT channel. That is lost forever.