It should be noted that the first amendment doesn't apply to companies, ie you have no rights with respect to them. For example Facebook is doing the exact same thing.
Companies may not be legally culpable for freedom of speech, but they are still morally culpable. Rights are not a legal construct, but a moral imperative. The founders of the United States recognized the importance of these rights and created a tiered system of laws in order to ensure these rights would be maintained by the government. Sadly we have no such guarantee from companies.