Because they can.

For profit hospitals subsidized and enforced by the leviathan, what could go wrong?

How much does something cost? Whatever the seller can get people to pay for it. Hospital B charges 6 figures for the delivery of a child? Wow, that's expensive, they must be really good to be able to charge that much.

All the dark patterns, negative dynamics, perverse incentives of bad government, stupid healthcare policy, and humans being shitty combine to form for profit hospitals. Those determine how other institutions have to run in order to operate at all, and they're not being managed by well meaning, good faith citizens looking out for the patients and the public.

There's a reason mangione became a cult phenomenon, and $40k babies, multimillion dollar ambulance trips, and other bullshit are exactly why.

Good luck fixing that mess. I don't even know how to conceptualize where you'd even begin to try to fix American healthcare. It's so tangled up and beholden to all the other problematic elements in modern life that it looks nigh on impossible to repair, so my goal in life is to minimize contact with any element of the system as much as humanly possible.