It's more complex than that. There is front-running and back-running in DeFi, but it applies only to certain types of transactions. There also exist solutions

It's more complex than that. There is front-running and back-running in DeFi, but it applies only to certain types of transactions. There also exist solutions to prevent most of it. Regardless of front-running, you still get transparency. It's one thing to be front-run and know about it, but another thing to submit your orders to a black box where a company extracts arbitrary value from them and you don't know what goes on inside.