If everyone had access to healthcare the net benefit of treating the mental illness and other disabilities holding them back would easily cover the cost of the healthcare itself.
I'm just speaking from personal experience. If I was given adequate health care 20 years earlier there is no telling how different my life may have been. Instead I had to achieve impossible feats to get insurance which then made those seemingly impossible things trivial.
Its so weird living in a country where healthcare is a right, and seeing how E everyone in USA is against public healthcare until their insurance stops covering expenses.