Government provides the funding for basic medical research.  

Drug companies take promising  ideas, that is potentially profitable ones, from universities and hospitals and conduct clinical trials which if successful will allow their sale and afford them patent protection.

Those who fund the trials are those who stand to profit and choose who will conduct the trials.  Those who conduct the trials therefore have an incentive to produce favourable results.  In addition, drug companies are not required to publish the results of studies that are not favourable. 

Companies spend far more money on marketing their products, of which conferences are part, than they do on research and development.

It's time that Health Canada cleaned up the system.