I can choose not to pay you to use your WiFi.

But I can lawfully use my own WiFi hotspot, even while I am lawfully on your property. You may own the property, but you do not own the radio spectrum.

Imagine you meet an entrepreneur who has a gun and proclaimed he'll shoot everyone in sight by default, but that he provides a service in which he can exchange the bullet for the "BANG!" flag for a small fee. It's not extortion - you're free to refuse the service after all.

That's not at all the same case, you're being threatened. I'm impressed at the dishonesty on this one.

Imagine you're at a hotel, you can access their WiFi but you have to pay for it. Imagine you're at another hotel, you can use their pool but you have to pay for it. Are you being extorted? No. That's a better example.

Yes, but in your example you need to add that I have with me an inflatable pool that magically doesn't spill, and the federal law allows me to use it instead of hotel one - and I get kicked out of the hotel for actually using it (or worse, they make my magic water supply stop supplying water).