&gt; <i>if your drug is the best, doctors should use it anyway, and if it&#x27;s bad but you can increase its usage with huge marketing campaign, then mankind just gets screwed for own money.</i><p>That&#x27;s 100% true for everything - just replace &quot;drug&quot; with &quot;product&quot;. As soon as an advertisement is leaving the point of informing about product&#x27;s existence and features, it&#x27;s starting to trick people into chosing a suboptimal option.