High winds and a big square full of air don't mix no matter how they're anchored. It doesn't mean you quit using them. You just have to think. One thing I've learned is that, if it makes the news, it's a rare occurrence. When I lived in NYC, you didn't read about all the murders in the city because they were so common. On on the other hand, you hear about all the murders in Syracuse. You don't stop using something just because it goes bad once in a great while. You don't quit riding in a plane or train or bus or driving a car because they crash once in a while. You just be careful and hope they are making them as safe as possible.
I remember the wind was really blowing when we lived in Tulsa. My husband anchored the shed to the fence with wire. It was fascinating to watch the shed raise up and go back down when it hit the end of the wire. One time the shed came up and went back down but the roof didn't. It took off.
This type of fun seems safer if done indoors, or at least firmly anchored. Bouncing fun houses turn into Flying Fun Houses. Ban or regulate?