Indeed. Did not music publishers find the same when they went after YouTube, not realising that it was quite possibly their most valuable, free advertising tool ever? Talk about killing the goose that lays the golden eggs.
I sometimes wonder what goes through the heads of some of these supposedly intelligent people. This is exactly the kind of entitled attitude that copyright generates, even to the point that publishers will pursue their own customers in court, and other entities acting in their best interests out of sheer spite (because they are also making money).