Why no DVD?

With nearly every other major home video label (Warner, Columbia, MGM, Anchor Bay, Fox) putting out their Hammer Films inventory to DVD, why is Universal dragging its feet? They hold the rights to EVIL OF FRANKENSTEIN, BRIDES OF DRACULA, PHANTOM OF THE OPERA, NIGHT CREATURES, CURSE OF THE WEREWOLF and KISS OF THE VAMPIRE. (Although this last title was one of the films from the Universal library briefly licensed to Image DVD, before Universal began putting out their own DVDs. While the Image/Universal titles are out of print, KISS OF THE VAMPIRE still can be found on shelves for around $10-15.) And Universal also has the Hammer psycho-thrillers NIGHTMARE and PARANOIAC in their collection, as well. (Which would make for a good double feature.) NIGHT CREATURES (a retelling of the Dr. Syn/Scarecrow of Romney Marsh tale, starring Peter Cushing) has--as far as I can tell--never had an official video release in the U.S.. (Although copies do turn up on E-bay, from pretty sharp prints.) You would think, with the technology to make DVDs at home becoming more and more common, Universal would attempt to officially market these titles before high-tech, high quality bootlegging begins. (Let's face it, it's just a matter of time.)