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.
So this is basically a centralized broker just like we have in traditional finance? I guess one difference is that users still have DMA since exchange accounts are just linked.
> This allows us to earn revenue by making our own markets and keeping some of the difference between prices offered by buyers and sellers.
In other words, you route orders and users get worse prices because you MM yourself, also like traditional finance. It's a good business model for you but as a user I'd rather see transparency and a move towards DeFi where everyone is guaranteed the same execution.
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.