> No sane person will buy brain surgery if he has no problems even if it 1$ and he has no choice but to buy one at whatever cost if he has.
So what? Also, if there are multiple methods to treat his conditions, he may choose more expensive(or more cheap) method. Also, he may choose not to have brain surgery -- and sadly suffer or die. Socialism is hardly a solution here, if state will fail to provide necessary amount of surgeons to fulfill demand for them, then people will die too(not mentioning that there always be better methods and better qualified surgeons, so you won't be able to achieve the same level of healthcare anyway).