If you earn more than 50k Euro per year you can opt in for private health insurance instead. This greatly reduces the cost of insurance if you have big income. You can get good private insurance for 250-400Euro/month depending on your age.
I find this perfectly valid and think we should get rid of private health insurance at all. It's undermining our system, pretty much like pension for state workers and alike. We really need to unify this system, imho.