Wouldn’t it be invasive to demand that anyone handle anyone else’s business? There’s two freedoms being negotiated there, and the law origins basically boil down to — by emphasizing the business owners freedom the market should be able to support a solution for the other (or you go build that business, if it is needed). Total freedom in that system is higher than in the one that demands anyone do business with anyone.

R_TheDonald is a forum on someone’s product, there’s a low barrier erected here, they could go buy a url and some servers and continue their speech.