This is a fairly niche but big use case - it’s revolutionizing the music industry. I wrote an extensive article about it if you’re interested.

DeFi is pretty cool even in its infant form too. A lot of people from 3rd world countires gain access to more stable currencies (like USD stable coins) than their hyper inflated domestic one. Imagine working and saving money all life only for it to lose value every day.

The utility of crypto isn’t to make early investors rich, that’s just a by product of free market and highly speculative nature of bull markets. Try downloading Metamask and using some dapps built on ETH for example, a lot of light bulbs might go off.