I think that reinsurance sounds like a good idea. If you can mitigate risk, you stand a good chance of being able to bring costs down. That opens the door to more people being able to afford health insurance, even people with high risk conditions.
Traditionally these people have had to opt for expensive policies if they had serious health issues. With the reinsurance these high risk individuals could access policies at reasonable rates, at least in theory anyway.
I don’t know how widespread the practice of reinsurance is, but it’s surprising and somewhat encouraging to learn that it goes back a long time. I think we definitely need new ideas in the healthcare market.