Nothing else matters. No other principle is as important as making sure that nasty hatefilled corporations ran by liberals can censor public speech which they don't like.
Lets see. In your world we have to choose between being able to own private property or having the government force us to use our resources and spend our money to promote any random message anyone out there wants to spout.
It isn't enough that the speaker can distribute their message any way they like and can afford. No, we need the federal government to make sure everyone listens to their words.
But doesn't that cause a problem for "communications systems", you ask?
Since the government is forcing them to publish anything anyone wants them to without curation doesn't that mean that the system will be flooded with crap and the owner's investment will be trashed?
Well, technically yes, but never fear.
We'll have wise men deciding for us exactly which private property will be confiscated and exactly which messages must be broadcast.
For instance, there's this communications system called Free Republic but it's in favor with the current Secretary of Compelled Publishing so not to worry. He doesn't like liberal speech so the "owner" is still allowed to ban posters. I'm sure the next Secretary will have the same wisdom.