Not when they're essentially monopolies. They're basically a public utility.A private entity has every right to censor any damn thing they wish, only the Govt is limited in such by the Constitution.
But the government does the exact opposite, so you should be pleased.The very last thing we need is the Fed Govt telling sites what they must allow.
The government here says they can't censor based on content. They can throttle certain types of traffic, like videos, but they can't treat any videos as being inherintly better.