I think drug development is one of the strongest cases for a patent system. However:<p>&gt; many people would be unemployed<p>This isn&#x27;t an argument at all. It&#x27;s better for people to be unemployed than to be employed in an enterprise that makes everyone else worse off.<p>&gt; and there would thus be no incentive to even develop new drugs<p>Of course there would. We had drug development before we had patents.