I agree. The whole point of a free market is that it should lead to a competitive market, in which profits shrink and consumer surplus expands. He literally says that Figma is threatening Adobe's margins. Stopping mergers of companies like this is ... exactly what antitrust is for?
I think the argument is that Figma might not exist in a world where such deals are blocked (or future Figmas may not come into existence if this deal is blocked), and thus would lead to more market harm than it would help. I'm not sure I agree with that reasoning, but it is plausible.
If that is the case that means that investors cannot see themselves competing with established players in the market. That would be an indication that the current market dominators should be broken up, not that they should be allowed to acquire more companies.
400 million revenue, 20 billion acquisition price. Sounds like free market to me? They paid up to protect their business and everyone walked away happy.
Why wouldn’t they be happy? Nothing bad has happened to them. I know some are grumpy on Twitter but none have articulated a real harm. It’s just as likely this is good for them, like how Microsoft really improved GitHub.