EXCLUSIVE: Why did the Shubert Organization, which owns 17 of Broadway‘s 40 designated theaters, sign off on a deal to buy New World Stages, the five-theater underground off-Broadway complex owned by Dutch entertainment mogul Joop van den Ende? Sources tell me the answer has nothing to do with the arts and everything to do with real estate — along with the unique, not to say wacky, world according to Shubert, a $410 million nonprofit that coincidentally owns the most powerful commercial theater company in the U.S. The company, whose theaters housed Les Miserables, A Chorus Line, Cats, Fiddler On The Roof, Amadeus and countless other legendary shows, has been Broadway’s reigning landlord for nearly a century.