I don't buy into your premise. A hairdresser, barista, Dell installer, etc are not out in the open public. These people are in places open to the public but not considered public. These people can deny your "right" to be there, and impose rules/restrictions on what you can do in their open to the public space. Go against those rules/restrictions and you are no longer welcome.

You are really trying to contort yourself into some very uninteresting twists.