@ flaws in your argument. 1. If you steal silverware you must replace it and it costs you. You don't have to replace wifi.
2. While it's true that most places have a password many don't. And as I've said most places will give you the password just for the asking, no purchase necessary. You obviously are not a small business owner as I've mentioned that businesses want people to be attracted to their premises. For example, stores have sales where they have a loss leader where they lose money, but the idea is to get you into the store. The same thing goes for free samples. Here's s link to show what I'm talking about. http://smallbiztrends.com/2015/11/small-businesses-need-offer-free-wifi-customers.html Read the entire page and I won't have to respond here anymore.