This is one of those irritating stories that relate how people are taken advantage of for someone else's gain. "Marriott International will pay a $600,000 fine for jamming conference attendees' own Wi-Fi networks at its Gaylord Opryland Resort and Convention Center, forcing them to pay hefty prices to use the hotel's own connection."
When you have your own WiFi hotspot whether a portable device or as an added feature to your phone, you expect to be able to use it when you're in a place without Wi-Fi. That's why you pay extra for it. But it seems Marriott and I'd bet many other places do their best to block those hotspot signals so you have to pay to use theirs. Once or twice recently we've been in places trying to use our hotspot and it wouldn't work and now I am pretty sure why.
It's not as though those big companies don't have enough fees.