Parsimonious Explanation

Nicholas Carr, "HD DVD RIP":

You can get away with a three-letter initialism as a product name, but if you try to stretch it to five, you're sunk. HD DVD? It never really had a chance, particularly when it was up against a snappy futuristic-sounding name like Blu-Ray. If the Jetsons had decided to get a second dog to keep Astro company, they would have named it Blu-Ray.