It has the effect of a purge of undesirable artists. Although not exactly the same, a comparison to Nazi Germany is quite adequate. In his book, The Rest Is Noise: Listening to the Twentieth Century, Alex Ross writes about the Nazi's purging of Jewish musicians:
Hitler took power in January 1933, and by the end of the year most of the German cultural apparatus had fallen under the control of Goebbels's Propaganda Ministry. But music did not become a direct instrument of the state. Hitler wanted the ministry to serve the "spiritual development of the nation," and Goebbels agreed...... The Reichskulturkammer, or Reich Culture Chamber, had departments for each artform, including a Reich Music Chamber.... Musical life was not merely Nazified from above; to a great extent, it Nazified itself. Even the anti-Jewish clause in the Kulturkammer laws neglected to mention the Jews by name; cultural bureaucrats were left to decide which artists lacked "aptitude" for cultural life. Not surprisingly, all leading Jewish musicians were deemed inept.
It's a bit of a stretch. But as I found to be the case with CNN and cop-killers, it's the apologists who end up looking much more similar than the acts.
Goebbels (from a 1933 rally in which he attacked Germany's critics):
The boycott and atrocity propaganda they made in other countries was an attempt by International Jewry to accomplish by means of public opinion in other countries what had been made impossible by our takeover in Germany. They attempted to cause difficulties for Germany’s rebirth through a worldwide boycott campaign, and to render it ineffective.
.... Our country still faces a world boycott by International Jewry, even if it is not as open as it was earlier, and we are still threatened by a cleverly thought out and systematically executed world conspiracy.
Netanyahu (from the article):
The State of Israel is subject to a de-legitimization attack on the part of different elements in the international arena, including attempts to launch academic and economic boycotts," Netanyahu said. "The last thing we need now is an attempt of boycotts from within."