cleveland124 on 08 June 2008
HD DVD died due to the perception that a unified format would equal bigger install base which would equal higher profits. As such, when it was apparent that Blu Ray would have a higher install base, everyone jumped ship.
UMD is still alive because the PSP sells fairly well and people still buy some (albeit few) movies. It's kind of like the GBA movies. I don't really consider UMD a format but if you want a movie to go on the road and have a PSP you may choose to pick one up.
