Resale-able maybe, unable to be revoked I think is more important.

As in you can't wake up one morning and your game is gone overnight because copyright around in-game music changed.

> Eventually someone important enough will force digital resales to become reality

Honest question: why? Why would anyone important enough to hold that power actually use it to force resales to exist? Who actually has the incentives to make this happen?

KYC? The only context I know it from is 'Know your customer' in banking.