The Dark Forest Concept in Cryptocurrency?

In traditional finance, you have this thing called high frequency trading. This is when different proprietary trading firms or funds will sort of do different tactics to make money in the stock market. What a miner would do is they would select transactions out of this pending pool and then submit that as a block on the blockchain. Once that block actually gets mined, that's when it's officially on theBlockchain. The order of transactions matters. So what I might say as a miner may be: "Well, because I'm the one who's in charge of constructing this block, what happens if I actually front run this person?" If there's a large buy order based off of how Uniswap