Drug R+D plus approval processes are very expensive both in time (>10 years) and money (>2 American billions) [1]
[1] http://csdd.tufts.edu/news/complete_story/pr_tufts_csdd_2014...
[1] http://csdd.tufts.edu/news/complete_story/pr_tufts_csdd_2014...
I would bet if these processes were carried out "transparently" we would find alot of waste and inefficiencies.
I get the feeling things will change once Silicon Valley finally decides to get more invested in the pharmaceutical industry.