I don't buy into the analogy. Cable providers can't prevent you from watching free OTA channels on your television, but Apple prevents Epic from publishing iOS apps outside of the App Store. Considering Fortnite was removed from the App Store specifically due to offering outside payment options, denying its return will likely lead straight back to court.
It's not exactly what he said. The fact the they agreed to a contract prohibiting them from using an outside payment method and then willfully violated that contract is a detail that courts may not be so willing to overlook.
Contract law allows you to sign away many rights you would otherwise retain. I'm not sure that a contract provision being found illegal under antitrust law has the effect of it being retroactively considered unconscionable or excuses agreeing to the contract in bad faith.