Crypto hasn't solved the digital scarcity issue at all. If the game stops existing so do the servers hosting the assets, since most crypto systems can only hold small tokens rather than the assets themselves. There are plenty of NFT examples where the underlying company went broke and the assets themselves disappeared from the internet. The MTG example falls flat if Wizards (the owners) take down their asset hosting services, so it's still mostly centralized and dependent on a company to function.