Re: anti-competitive practices.
You have spotted exactly the point. It's not natural to want to be competitive, it's natural to want to crush your opponents into dust if they are vulnerable, which is why "anti-competitive practices" are banned with government enforcement for the sake of retaining a robust free market. Just like it's natural for a boxer to want a horseshoe in his glove, so we make rules about glove composition and agree the sport benefits from these rules. The general consensus is that consumers would suffer if regulators did not detect and punish anti-competitive practices.