You're forgetting the whole...." I invested entirely too much in corporate real estate".
When there's instability in the market a lot of fortune 500 corporations will start investing in corporate real estate as a "safe bet" to hedge more risky investments.
Skyscrapers and large office spaces are on paper horrible investments and have an awful time filling enough vacancies to offset their upkeep. The only thing that makes them a "safe" investment is that every company uses them as a way to bank equity. If those same companies pulled the rug from under themselves they would all lose that safe equity piggy bank.