No because it's not related to your specific content.
Even if you were to make the argument that X content doesn't make money and costs too much, if someone pulls the trigger without giving you recourse to resolve issues, then it is violation of free speech.
In your example, if AT&T tells you that you must pay more money to say certain topics, then it's a violation.
If it costs money, it costs money, nothing wrong with that. The issue is intent.
This is actually exactly how big media/big politics operates.