The problem is, for every sad story about people losing their money with a company helping them, there are just as many stories of people losing their money in self-custodial wallets by accident, theft, extortion, and so on.

As the market matures, there will be more and more big players like Coinbase and Binance and so on who are serious firms with very sophisticated security and financial transparency, and these firms are going to be, on average, far safer than people trying to guard their wealth themselves.