Our broken healthcare system has no shortage of startups trying to fix big stubborn problems.  The opportunities are plentiful. That’s the upside. But the reason there is so much opportunity is that healthcare in the U.S. has been so resistant to change. And that’s the downside.  There you have it. The beckoning and the reckoning — healthcare’s two faces.   You can consider them two sides of the same coin. The question for…