> Should a Lasik surgeon provide Lasik to everyone regardless of their ability to pay?

Yes

The lasik surgeon in your example isn’t profiting by denying care. Their profit does not increase by declining service.

Is a PE hospital profiting when it denies care too? How is that different from a lasik surgeon denying care?

I didn’t make claims about how PE hospitals make a profit. I just said that no one should profit from denying care. I can think of a situation in which a hospital’s owners want to make sure their return on their investment exceeds x% per year and the hospital administrators deny care based on this consideration (otherwise they might get fired for not generating enough profit). This isn’t the scenario I had in mind when I wrote that no one should profit from denying care. WhenI wrote that I was thinking of insurance companies and wanted to convey a sense that profit driven motives in health care can have bad consequences. Some things ought not be profit driven.