Greg, agreed - the blackmail element seems wholly American, is retrograde, and ought to go back there.
Perhaps we could organise something that parallels the noble activities of the ladies of Piccadilly during the war. The Yanks were overpaid, oversexed, and over here. The ladies of Piccadilly contived to take advantage of the oversexed status, relieve them of the overpayments, and send them home with syphilis...