I think boykster is probably hinting at a complimentary relationship, though, between the success of the studios and the success of the hardware. If studios find that their titles sell better on BluRay, they have more incentive to make more titles available for that format. The more this happens, the more the BluRay section at BestBuy begins to dominate the HD-DVD section. If I'm just an average, know-nothing consumer, looking for a next-gen media player and I see that there are twice as many titles available for BluRay as HD-DVD I'm going to say to myself, "Hmm . . . that's a pretty big selling point. It looks like it's much more likely that any given title I want will be available on the BluRay format, so I think that's the technology I'm going to go with." This, in turn, gives studios even more incentive to release movies on the BluRay format, because the install base of BluRay players is increasing, which, in turn, gives consumers even more reason to choose BluRay, which in turn, etc., etc.
It's very similar, principle, to the console videogame market. Playstation and Playstation 2 blew their competition out of the water. In both cases their competitors had superior hardware. But the third party publishers (the equivalent of movie studios) gave more support to Sony's systems, creating more software. The larger library of software encouraged consumers to buy that system, which encouraged even more third-party support, which encouraged even more purchases, etc.