As strange as it sounds that's not really how it works.

It's a competitive industry. So, an insurance company's profit is based on total healthcare costs. The only way for the industry to make more money is to cover more people, or for healthcare costs to rise.

Put another way, if total healthcare spending was 0$, their total profits would be 0$. They can cut internal costs somewhat, but that's about it.

As opposed to the doctors, nurses, hospitals, medical supply and pharmaceutical companies who profited for over a decade from the child's care?

What prevents it now?