A new review has concluded that hospitals that are privatised typically deliver worse quality care after converting from public ownership. The study, led by University of Oxford researchers, has been published in The Lancet Public Health.
Privatisation leads to worse products and services in general - the focus shifts from serving the people to doing anything to make more profits, but especially when it's something like healthcare.
You'd have to be out of your mind to privatise things essential to life, like healthcare, water, etc.
My rule is: Only allow whatever you don't mind losing to privatise.