I believe it. On Ethereum for instance before lots of competition came whoever was behind this address made literally hundreds of thousands of dollars a day in

I believe it. On Ethereum for instance before lots of competition came whoever was behind this address made literally hundreds of thousands of dollars a day in 2021 doing atomic arbitrage. You can see this graph of their balance here: the declines are due to them withdrawing money from the contract. https://etherscan.io/address/0x0000000000007f150bd6f54c40a34d7c3d5e9f56#analytics https://etherscan.io/address/0x0000000000007f150bd6f54c40a34...