I've said it before and I'll say it again. America is flooded with surplus commercial real estate. Rental demand is climbing and the available rental unit supply is not up to the job. Thus rental prices stay high (relative to the economy) while hundreds of millions of square feet of real estate sits vacant, not generating income and in some cases, so empty of people as to be at increasing risk of vandalism and theft. And real estate companies are in serious financial trouble. We also need to face that as people get poorer, they'll become more prone to exactly the kind of destructive behavior that any owner of an empty building should fear.