> Access to chemotherapy or radiotherapy or surgery is much easier for wealthy people than it is for poor people.

Is it? When I underwent chemotherapy, I did not pay for anything (to be honest, I paid gas to get to the hospital, but did not pay for medics, hospital bed, tests, blood analysis nor lost my salary for the days I could not work). Even though the price of some of the medics that were injected in me twice a month was greater than my monthly salary. Cancer is a disease for which poors are very well treated in France (So yes, in some wealthy country, cash makes no difference).