That isn't the case if the way you're becoming wealthier is by frontrunning by a few milliseconds. By doing so you're effectively leeching off other participant

That isn't the case if the way you're becoming wealthier is by frontrunning by a few milliseconds. By doing so you're effectively leeching off other participants in the stock market, including large institutional funds (like universities, which spend on basic science research). Sometimes people get wealthy because they help create value. Sometimes they get wealthy because they're leeches. So maximizing your gains clearly doesn't always maximize gains for society.