I don't think the business owners should have a right to post no guns once they open their property as a business that's open to the public I think they should lose the option of posting.... but that's just my belief and I don't see that ever happening. On another note.... I work in Pennsylvania and there used to be a lot of no guns signs up in PA several years ago now you rarely see them I can not remember the last time I saw a sign in PA and restaurant/bar carry has been legal in PA all along.