It was broken by an Austrailian magazine in January, and then again by Germany. Drudge just made it more public (just goes to show how crappy those two magazines were). 
I prefer to go with the theory that the story was broken by those two magazines, but not followed up by any other media out of respect for the news blackout and the prince's safety. Of course, Drudge is pervasive enough that once he opened his tactless hole, the rest of the world had little choice but to admit the truth too.
I don't see why the media should kowtow to any news black outs. Isn't that just a velveted form of censorship?
To quote Drudge himself: ""In every state and nearly every civilized nation in the developed world, readers know where to go for action and reaction of news -- at least one day ahead... Free from any corporate concerns, there are simply too many to thank since the site's inception in 1994. This new attempt at the old American experiment of full freedom in reporting is ever exciting. Those in power have everything to lose by individuals who march to their own rules."
Keep fighting them Drudge.
