[throwaway729]

But there is a shortage of people with (good enough) insurance who would have an actual need for those beds.

The article even indicated this:

Current and former employees from at least 10 UHS hospitals in nine states said they were under pressure to fill beds by almost any method — which sometimes meant exaggerating people’s symptoms or twisting their words to make them seem suicidal — and to hold them until their insurance payments ran out.