The courts have ruled that @RealDonaldTrump's twitter feed constitutes official government communication. How does that square with Twitter having the right to

The courts have ruled that @RealDonaldTrump's twitter feed constitutes official government communication. How does that square with Twitter having the right to restrict, block, limit distribution, or attach addendums to tweets? Given that the situation with Twitter a mess right now, the only responsible thing that should be done right away is for the President to issue an executive order barring the use of Twitter for any official purpose. Remove all tweets and close all accounts. A third party should not be intermediating between the government and the public. If microblogging is a value, then he should also issue an EO which directs the appropriate federal agencies to establish standards defining protocols, create baseline implementations, and regulations around use, free speech, and the like.