Because for healthcare profit isn't a motive to begin with (or at least, it shouldn't be) and there aren't many different alternative sources for it either.
Healthcare is profitable like schools are, or roads, or public transportation, or sanitary systems: the goal is for us a society to live better.
When something is profitable in the sense that a few oligarchs make more an more money, I see it as a bug, not a feature.
Neither it is for nuclear. It fixes the externality