Here's an alternative explanation, which I know is true for at least one nationwide property ownership/investment company.
The company has three core activities:
1. Raising money from investors
2. Buying properties when the price is less than the expected profits.
3. Selling properties when the price is more than the expected profits.
At a point a year or two or three ago, the math on buying properties just stopped making sense on individual property basis. That whole side of the business just ended up going into sleep mode. No purchases since forever. However selling properties (adding cash), and fund raising (adding cash) kept right on going. The net result is the company owning only a small percentage of what it used to own, but having one heck of a war chest. Which they are sitting on, waiting for the economics to make sense again.