Apples and oranges. I don't know what the matters were, but I will bet my dollar to your dime they didn't sue these people because they violated a state law, unless the act was committed in that state.
So Florida decides they don't want Amazon to advertise or sell any Barack Obama books to their citizens. But Amazon can't do that. They have one site, not 50, one for each state. The only way to accommodate Florida is if they change their entire online catalog so nobody can buy Barack Obama books. Should one state have the power to do that? What about if like these social media outlets, they are international?
It's complete stupidity. Look.......if you disagree with Twitter or Facebook, cancel your membership. That's all. No court would even hear a case against FB or Twitter because states cannot write laws that control a company in another state.