I'd like to note that in that article he wrote, he was careful to point out that he did not think government intervention was the primary factor. Specifically, he pointed out to veterinary care as an industry that has very little intervention but has the same cost disease problem as people care.

Its kind of difficult to find the similar strand in all of them to be honest. That's the reason the article ends on such a sour note: he never really figures out what's causing this.