If I'm a paying customer I'm also getting the benefit of "free" wifi, if people are not paying the establishment anything and just stealing their wifi, for those paying, the signal gets depleted and its less of an experience. Sure that can be said if the place is packed and everyone is on, but this is different. As a small business owner, I would not offer a "loss leader" that would be detrimental to those actually paying. Can you imagine going into Starbucks and not a table free but no one is buying anything?