The idea would be that these tokens-as-licenses would not be revocable. If you hold the token, you hold the license and rights to download and play. This would need to be defined and enforced by the publishers own ToS and/or some hypothetical regulatory body that acts in users best interests - if they break this, such as blocking a specific license holder from access to the game, there would be grounds for a dispute, and clear records for it given the ledger is public.

Highly unlikely any of this will happen as it is more profitable and easier for game publishers just to stick with their current closed ledger, that allows them the ability to revoke any license as they see fit.