I think a lot of the companies took a bit of a bath on the deep back catalogue (how many copies of these lesser-known titles sold?) and the big, known tilted are already out. We had more than ten years of great surprises but I think those days are over, even companies like BU are playing things safe with reselling (bundles or Blu-ray) titles that have sold well previously.
Still, companies such as FilmArt and CameraObscura are still uncovering previously unreleased gems, so it ain't all bad.