Buildings don't disappear. but the owners are. Buffett and Munger on the U.S. real estate storm and safe haven''.

according to a report by consulting firm McKinsey. The report predicts that because of these trends and other factors, demand for office space could be nearly 20 percent lower by 2030 than in 2019.

The implications for landlords and lenders

This is bad news for commercial landlords and even worse news for their lenders. Munger noted in an interview with the Financial Times in April that the commercial real estate sector in the U.S. is "awash" with "bad loans." Rising interest rates, falling rents and a corresponding decline in real estate values could cause these loans to become unsecured, meaning the balance owed will exceed the value of the property itself.

The Berkshire Hathaway strategy

This pain, however, is not necessarily''means opportunity for investors, as Munger noted. "Berkshire has never been active in commercial real estate," Manger said during a question-and-answer session with CNBC's Becky Kuik at the annual shareholder meeting in May. "It works better for taxpayers than it does for corporations like Berkshire.