Health care is complicated, expensive, opaque and even when superficially transparent is affected by huge numbers of external factors.
Good article summarizing some of the issues:
http://www.slate.com/articles/business/the_bills/2017/01/why...
The JAMA study cited in the article:
http://jamanetwork.com/journals/jama/fullarticle/2518264
We have to think about these complexities because otherwise we'll keep hurting people. No solution will be perfect, but ideological ones will definitely be worse.