Well that was a little funny… so long as you don’t think about all the things that could go wrong. They could have landed wrong, they could have broken something or a number of other things. How could this have been prevented? In every state that I can think of the companies that rent these bounce houses (aka moon bouncers, jumpers, bouncy castles) are required to either stake down or weight down all four corners of the unit. This is to prevent both users and nature from flipping the unit over.
I owned an outdoor rental company for a few years and the number of illegal operators drove me out of the business. These owners were ones that didn’t have insurance, a business license, and almost never followed any of the state or local regulations as far as safety and proper operations. It’s a sad fact that many law abiding business owners will never succeed because of unfair competition… not to mention the bad name these shady operators give the industry.