In this scenario I think the biggest issue with losing an account is the ability to aquire future purchases. But like I said, it's more a matter of principle for some. You own a book, you don't own a digital copy of a book.
If it says "license" on the button rather than buy then find another store...
This is not legal advice and is my own personal opinion.
It would be great to be able to resell digital purchases, but that’s only on the consumer’s interest, so will never happen without an act of ${rule_making_body}.
But damn I wish my Steam library had a resale value.