This doesn't seem to be a antitrust issue at all, it looks like it was one company bailing out another.
https://www.justice.gov/archives/opa/pr/justice-department-s...
“Our win in court is a victory for U.S. travelers who deserve lower prices and better choices,” said Assistant Attorney General Jonathan Kanter of the Justice Department’s Antitrust Division. “We fought this case to protect consumers who, as the court recognized, ‘otherwise would have no voice.’ I am incredibly proud of the Antitrust Division’s team and our state law enforcement partners’ tireless advocacy.”
There is plenty of crap legislation and regulation about, but it doesn’t have to be that way.
I'm not against regulation, I think there are areas where it's needed (privacy is a good example), but it is fire, and fire should only be played with when you really need it because it can easily grow out of control and burn things you don't intend to get burned.
Look what it took to wrangle the cigarette industry. Look how unfettered gambling is ripping through the USA.
Or look at industries pre-regulation. Meat, building construction, medicine...
At minimum we have as much evidence that "the market" is capable of being as bad as "bad regulation."