Earlier quoted context omitted.
That's a rather simplistic view of the matter. They do coexist is most countries, just in different sectors. When a country collectively owns most of the healthcare means of production and protects it by law (e.g. by requiring emergency ambulances to go to public hospitals), how is that capitalism?
They are merely social policies, not socialism. Capitalism is the unlimited protection of personal wealth, thereby for instance allowing billionaires to exist.
That would make China not capitalistic, which is obviously wrong.