How the ‘urban doom loop’ could pose the next economic threat

In Indianapolis, the technology giant Salesforce is paring back a quarter of its office space in the tallest building in Indiana, where it has been a key tenant for the past six years. In Atlanta, the private investment giant Starwood Capital defaulted on a $212 million mortgage on a 29-story office tower. And in Baltimore, a landmark building sold for $24 million last month, roughly $42 million less than it fetched in 2015.