Hospitals in the US are businesses. Most are for profit, although you'll sometimes find nonprofit ones. They have bottom lines to think about, and think about them they do.
How's this for messed up: The four hospitals in the Fresno area (not counting the Kaiser Permanente hospital, which is for Kaiser subscribers) routinely turn ambulances away, sending them on to the next hospital. Meanwhile, Community Medical Center-Fresno, the largest of the hospitals, only has something like two-thirds of the beds in the building available for use, because it would cost too much to keep all 600-something beds ready at all times. The number of beds they have mothballed is more than Community Medical Center-Clovis owns. Plus, Community (who owns those two hospitals and University Medical Center, which has the level 1 trauma unit and burn unit) is going to merge Fresno Community and University into one big-ass hospital on Community's property... but the combined capacity will be several hundred beds less than the two separate hospitals have now.