Yes the idea that its something unique to Airbnb is a myth. Miami Beach is dominated by hotels and they have strong anti-Airbnb messaging. Meanwhile their hotels dominate the skyline and take up all of the beachfront property. Some of the hotels will act like the beach is private if you don't rent their beach chairs which is of course not true.

The hotel industry distortion field is probably stronger in Miami Beach than almost anywhere because so much money depends on it.

I also don't believe that most the Airbnb rentals on Miami Beach are particularly cheap. The one nearby that I know of charges many thousands per night as its a mansion.