My point is that is is the right thing to do and multiple countries' regulators agree. Monopolies have proven themselves to be bad and consolidation is how they are created. The "free market" (as if there is such a thing) does not take care of this, because it's not profitable to compete with such a powerful incumbent. Any attempt to compete would require insane capex and have a higher price tag for consumers, who would likely have to pay it not instead of but alongside the current incumbent's price, which very few would accept. If instead, you intervene and block the merger, the company can (and is incentivised to) grow and branch out, competing with the one that tried to acquire it.

Obviously this is a YC forum and many people have a startup bias, but I'm nowhere near that scene. Many startups do even worse things than some of the big guys, because they aspire to become them. The "burn investor money to get market share at a loss, kill all competition, become a monopoly, then enshittify and make infinite money" strategy wouldn't be nearly as effective if we had proper antitrust enforcement.