For-profit insurance companies love programs like Medicare.
They can shove off their least-profitable customers, the ones most likely to get sick, onto the public treasury. While keeping hold of the more profitable ones.
Privatize profits and socialize losses.
They can’t have it both ways either.
You really don’t understand the concept of insurance, do you?
You probably believe people shouldn’t have to buy car insurance until after they have an accident and the insurance should be retroactive.