The expensive, risky part of drug development is not the portion that is publically funded.  Yay!  You&#x27;ve found a compound that appears to shrink tumors when directly applied to them on glass slides.<p>Now, figure out what the correct dose is, how to get it into a mammal so that it&#x27;s not metabolized into uselessness, how much you can safely give the mammal.<p>Now, start again with humans and hope you don&#x27;t get to the final stage only to find out that it&#x27;s not as effective as existing treatments or has side effects that will open you up to lawsuits.<p>Finally, once you&#x27;ve done all that, scale out the production of your compound such that you can prove that every dose meets FDA quality requirements.