[HBKXNCUO]

>If you run a restaurant, you can refuse to do business with anyone you choose.

You will suffer legal consequences if it's determined that you refused to do business with them on the basis of certain characteristics protected by law. Property rights are not absolute. Exceptions to them can be made if people think there is good reason to do so.

The situation we are in now, where technology companies have found themselves with wide power to control the public political debate occurring among regular people merely as a consequence of successfully running some particular types of business, is not one we've really seen before. There are some very persuasive arguments for limiting their property rights, similar to how they were limited e.g. ~50 years ago by the civil rights act.