If everything else is equal, a trustless system that makes fraud and shenanigans (almost) impossible is better than a system that requires trust. Your view is a

If everything else is equal, a trustless system that makes fraud and shenanigans (almost) impossible is better than a system that requires trust. Your view is also extremely US centric. MAYBE in the US the stock exchanges are perfect, and can be fully trusted. But the US is not the entire world. I can assure you that in other countries, a lot of bs happens with stock exchanges. Even in the US, there's a lot of bs that goes on related to high frequency trading. With a trustless, decentralized system, the playing field could be evened (instead of favoring those with LAN connections to the datacenter). And who knows in general how much order book bs is happening behind our backs. And the blockchain being slow isn't really that much of an issue. Stock trading is already settled at a later time, so stocks being settled to blockchains at a later time, batched, wouldn't be a problem (and real time trading would happen with L2 or L3s).