Earlier quoted context omitted.
Insurance companies. Everything is controlled by insurance companies. You can’t do anything unless it’s exactly how insurance wants and only for what insurance will pay. It limits everything, including how every profession can be compensated simply because you can’t easily hire somebody for more than what insurance will pay for their services. You can, but the funds have to come from somewhere.
Insurance is the only industry where they agree to pay for something (in this case, "medical care"), but then after service has been rendered can decide to pay less, or not pay at all, or stop paying that provider altogether, etc. This combined with hospitals being run by non-physicians*, and people thinking being able to Google and read WebMD qualifies them to argue with their doctor about treatment plans**, healthc…
The issue is if you have someone with a scientific background doing politics, what you have at the end is still a politician. Same thing here. An MD doing hospital administration is an administrator.
Which is not to devalue specialist expertise in these roles. I definitely think you want people with these backgrounds in those roles as well. Just not necessarily exclusively. A career administrator has different skills than a physician, you want people with both, and other, roles working to run a hospital.
The real problem as I see it is probably the incentives, constraints, and pressures they work under, or towards. A physician forced to run a for-profit hospital maximizing returns is going to make a lot of the same decisions as someone with a business background in the same situation. The thing is to change the situation, not put different people into that role and expect them to do it dramatically better.