A true free market requires full information—in this case, that means the ability to determine how trustworthy the "news" being provided by a particular organization is. And there's a big, big difference between an organization that presents genuine facts with a slant (though that can be problematic enough), or one that tries in good faith to provide genuine facts but sometimes fails, either due to bad actors within or simple incompetence, and one that knowingly presents verifiably false information.

"Free market" does not just mean "everyone (with enough money) gets to provide whatever they want, and call it whatever they want, and it's up to ordinary people to figure out what's reliable and what's not."