There is - Obamacare capped the profit margins of insurance companies.

So if you're United Health, you can't really improve your profit margins. And if you cut costs, you can't pass the extra value to shareholders.

If you want to give more money to your shareholders, you need more revenue and then more costs and you need to maintain your margin - the extra costs defray the extra money you return to your shareholders.

If you spend an extra $65 million on 'rehab' - you get to give more money to your shareholders.

Here's what's really bad about it, there's no real expectation that the health care improves. The insurance company doesn't care whether the expensive care is better, it cares that expensive care = more money for shareholders.

That's such a perverse incentive it's incredible. Healthcare has become a noose around the neck of America - it's 16% of our GDP and it accounts for about half of all the inflation since 1990.

Here's a blog post explaining the mechanism in the ACA: http://thehealthcareblog.com/blog/2012/02/04/does-obamacare-...

Here's Martin Shkreli saying that insurance companies make more money off expensive epipens than cheap epipens: http://www.businessinsider.com/martin-shkreli-on-epipen-and-...