Exactly. US antitrust regulatoors (especially ones that don't really want to do their jobs) seem to tend to look at an industry with more than one company in it and go "Yeah, looks great to me!", regardless of the facts on the ground.
I wonder if -should we ever be so lucky as to get a complete account- we'll learn that something vaguely similar happened with the OpenAI/Anthropic situation... not that one is financially dependent on the other, but that the fact that there are two companies doing the same thing instead of one gives the appearance of competition, which tends to ward off antitrust regulators.