This is the only way their tokens would sell themselves (and arguably more so) is if they guarantee that even if you lost your account, you could still transfer your NFTs to a new account. Also the ability to sell games you've bought is pretty awesome. Heck under this scheme, if you buy a game plus DLC but you already own the base game, it should let you gift / sell the game to a friend if you paid the full amount of the game + DLC.

I seem to remember a time when people were able to sell games and buy games on the Steam market.