You would think so. But the reality is that large companies would often rather let a property sit empty than devalue it by accepting a lower amount. And when they control enough of the market that there's no good competition, it breaks the whole "free market" thing.

You or I would be hurting (I presume) if we owned a property and weren't living in and weren't making any money off of it. These holding companies just see a line on a spreadsheet under the "assets" column.