Several years ago, I stopped at an RV park in Mitchell, SD for a couple of nights and the owner asked if I needed WIFI, which they advertised. He assigned me a spot close to the office, explaining that some folks complained about the connection if they were farther away.
Turned out that the salesman just sold him the software for his office computer and didn't take into account the distance from some of the sites. I drove my toad around with my laptop and found out that about half way back, I lost signal. He called the sales guy and ordered a couple of repeaters installed. Took care of the problem. WIFI was so new back then, that nobody knew much about it. I had been the computer guru at my company before retiring, and had seen the problem in our larger offices. I wouldn't take any money for it, but we had a couple of beers together.