If you mean that a game license can be sold as a NFT and they can verify you own it, sure.

But then, nothing stops the central hub (aka Playstation, XBox, Steam) from invalidating your license. In this case, your NFT only serves to prove you paid for it, and your access has since been revoked.

That is because you don't actually own NFTs, just a token pointing to a location where the NFT is stored (which can be removed/moved).

Check out: https://youtu.be/YQ_xWvX1n9g for a fantastic discussion of NFTs/cryptocurrency etc (it is long ~2 hours but very interesting)

The mapping of that NFT to [some piece of in-game content, a game account] is entirely outside of control of any blockchain system and is wholly dictated by the developers. NFTs give no more of a guarantee to access and utilize your purchases or content than a screenshot of your receipt for buying them in the first place.