Pointing out a conflict of interest is not an advertisement for anything. It is what it is. You could also have publicly funded, 100% government provided healthcare which provided some base level of care but allowed individuals to pay for specific treatments if they wanted them and they weren't a part of the base level of care.
Most public healthcare systems provide excellent treatments for the majority of the population. And, if you have some rare condition that can only be treated with some state-of-the-art cure that is only provided by some hospital out of the country, and you have several hundred thousand $$$ in your bank account, nobody will stop you from paying the treatment from your pocket.
