Remember when NFTs sold for millions of dollars? 95% of the digital collectibles are now probably worthless.
(markets.businessinsider.com)
It might be overkill, but the whole point is that you want to have a distributed record of ownership. Something that no single company can control and that can survive companies going out of business and disappearing. There aren't very many alternatives that can accomplish that and even less that are ready to use right now and not just hypothetical.