One of several reasons is they can’t make obscene amounts of money from socialized healthcare. Another would be their aversion to helping the less fortunate who they see as simply moral failures in life who don’t deserve handouts. And maybe a final point is that they know and trust the corruption of free market solutions instead of the “obviously inept and corrupt, gravy-train of welfare cheating governments” that they’ve been taught to hate (until the handout money comes to them during an emergency).