It's the same argument as people who say Google should be allowed to censor whoever they want. "They're a private company, they can do whatever they want. Nobody is forcing you to use their services."
Clearly, in many areas of life, politics and the legal system needs to be realigned with the modern technological landscape. But so far, it seems most such efforts are pushing things in the exact wrong direction.
For the record, I don't agree with it -- just saying.