Anti trust laws do not generally apply to these situations. The government has had an appetite for antitrust, but the cases are far from a slam dunk. We need modern laws for modern problems.

Those laws used to apply, until the courts adopted Robert Bork's "consumer welfare standard" in the 80s, under Reaganism.

Analyzed well here: https://yalelawjournal.org/pdf/e.710.Khan.805_zuvfyyeh.pdf