The rights to Mickey Mouse are about as productionless as any crypto, and I'd struggle to find anyone that doesn't think it would be a great investment.
Disney makes Mickey Mouse cartoons and uses it as branding. It doesn't have value just because Disney thinks it could sell the rights for more later. In fact, they don't ever want to sell it.
Well, the Steamboat Willie version of Mickey Mouse will be entering public domain soon.
It's an abstraction of the stock market imo.
People who bought and sold stocks also never understood there was something of value beneath it and just look for "is it going to go up?" and "why is it down?"