Right. You can't just choose to run the successful clinical trials anymore than you can choose to only buy stocks that will go up on wall street. you have to run various clinical trials for a drug, and they fail. a lot. that very very expensive with no payoff. the successes have to be so phenomenally profitable that they cover the costs of all the failures. So real change would come from making the costs of those failures go away, without being able to cheat the system. The amount of medicine is believed to work, but is unpatentable, and thus doesn't have the profit motive to be pushed through clinical trials is a huge black badge on the American version of capitalism as being the best way we can organize society for the advancement of science and technology.