Your question is good if there was any concern about the Blu-ray format being a Sony Playstation Format. There isn't. Remember the PS3 is designed to fight in two markets: Gaming & Home Theatre. It is a fierce machine in both! The picture quality of other BD players is/can be better than the PS3s, but as far as other current features go the PS3 enjoys strengths from its gaming design such as awesome processor power, internet connectivity & large storage capacity. Traditionally on home theatre products the storage capacity is the disc/tape you want to watch, so regular Bd players have to become computers to an extent inorder to offer the same. They will eventually develop more approriate, specific & cheaper hardware for these players, that I'm sure will more than rival the PS3 on the home theatre front. If you will you could look at it like, the ps3 is there to create a market, the other CEs are familiarizing themselves with the hardware needs etc (learning about the tech, experimenting etc) & thanks to the PS3 can steadily bring great players to market without worrying about obsoletion (Is that even a word?) or huge financial loses.
Also, since Bd was rushed to market thanks to a format we don't speak of, the first gen players are lacking certain hardware features that will eventually become commonplace. The PS3 fighting & winning this war for the Format has bought the other CEs time to work on players, improving them with each generation.
Anyways, enough from me
