You know how will end? It will be a fix for children sick from rich parents, like everything else in health... You pay, you skip queue, you pay, you get better and new treatments... Or for parenting, a couple of poor homosexuals will never get a child, rich ones will... Endless list
I couldn't find for this post by the way... there was a social media campaign for a Brazilian girl with a rare genetic disease girl. The disease doesn't have a treatment but they could access a clinical trial of something for 4 million USD lol so they were gathering this money for that...it is a lot of money!
That's why the debate between private and public health is always very difficult. I agree that without private investment, science slows a bit. But health access should be universal. Right now I don't know how to change that into an optimal way where you see science advances at the same time providing access to healthcare to everyone.