alt Hacker NewsA large portion of the US healthcare is through nonprofits who are more interested in continuing to exist than in maximizing profits.
Vaccine companies are very interested in preventing disease not the kind of extended treatment people so often expect the healthcare industry to be looking for. They have an endless stream of new people being born every year so have no interest in people getting sick.
If people aren't getting sick, they have no revenue stream. Those non-profits you mentioned obviously aren't as capable of lobbying congress to influence industry regulation / bureaucracy as for-profit organizations are.