Having read an XBLA agreement I can say the "right and permissions" is easily the most difficult thing to manage. I even had to explain it a few times to my management why MS had to have a few perpetual clauses in the contract related to keeping a copy of the game files - - duh, so someone that bought it could redownload it even after the contract expires (or the game gets delisted).

That kind of clause makes it much more difficult to manage older IP rights that might have been secured 20 years back before the internet and especially digital distribution with lingering server based copies could have existed.

Yeah, it's real, and it is a headache for someone trying to manage a brand like Ferrari.