I see your point, but do you not think that if you're a family of 4, having to pay $40K before insurance kicks in is ridiculously expensive, and out of reach for most Americans?
I'd wager that most self employed folks in the US almost never benefit from insurance (except for things covered by Obamacare which come nowhere near justifying the premiums). The deductibles can be so high that you're pretty much always paying out of pocket.