By the time the ink is dry on a patent someone will have invented something "better." But that completely misses the point- new formats take millions (or billions) of dollars to launch and sustain, and years to become established. So let's say I come out with my Babylon 5 datacrystal player. Then what? I have to be able to mass produce it, which involved tens or hundreds of millions of dollars in capitol. Then I have to entice the labels into using it, which probably requires me to develope some way to hamstring its functionality with encryption. Then the marketing guys get the tough job; they have to convince the public to scrap their entire music or movie library and replace it yet again!
Sure new technology is cool. But you're a long ways from being able to compete with BluRay or HDDVD just because you've got a newer widget.