What’s anti-competitive is that the studios also own the channels. If they were just a studio, they’d be taking bids from multiple outlets before even thinking about shelving it. But because they own both the content and the distribution, they don’t want it to be successful on a competitor’s network.
If that were completely true, there would be no syndication at all, but these things come in waves because there are benefits to both sides of the issue. The syndication market was shrinking until recently as companies tried to shore up their IP into the most competitive streaming package, and as that purist model is not proving to be all they hoped it would be, there is a renewed push to syndicate IP to other companies.
There are reasons we had these laws, and it seems everyone has chosen to conveniently forget them. I won’t be surprised when the movie studios argue that actors, directors, and writers should be “on staff” salaried studio employees again instead of free agents.