You say fail, but that's because you're looking at it from a "running a business" viewpoint. Instead, you have to look at "enrich personal wealth" viewpoint. It's possible to run a business into the ground while personally gaining financially. A failing business has some beneficial tax purposes. So people that think these failed businesses are a negative just need to look at them differently. They succeeded in their true purpose. The "running a business" was just the facade.
Yeah, the scam is to inflate the value of your properties, then claim a write-off when it fails. For "some reason" you can even use other people's money for the investments and claim the losses for yourself. Then you can use that as a deduction when you actually make money again. One scammer in particular pulled this trick for 10 years, rolling it forward and filing a $916 million loss with the IRS in 1995.
