Comment by MandieD

Medicare chooses the oldest (over 65), Medicaid chooses the poorest (who are more likely to have issues that went untreated and got worse) and most severely disabled, and Veterans' affairs chooses the ones who gave their bodies to Uncle Sam to be pushed out of planes, deafened in tanks, and have their backs wrecked with giant packs marched for several hours a day.

In other words, all patients that private insurers are likely delighted not to have on their books.