> Digital movies on DVD and Blu-Ray discs on our shelves.
It actually already got a bit more fuzzy with Blu-Ray and especially with later BD+ doesn't it? You own some encrypted data, but there is absolutely no guarantee you will always have access to a player with the right keys and a TV that is compatible and isn't refusing to play it.
It already drove the needle way past acceptable copy protection, do not buy Blu-Rays!