Let the hive mind of Engadget get that for you.
"What is the best wireless surround sound speaker solution? I have a home theater where running wires is just not feasible. I have my own speakers, so I don't want a system that has speakers with integrated wireless. I've done a far amount of research and have only come across a few companies that even offer a reasonable solution: KEF, Kenwood and Rocketfish. Is there anything else out there? What do you recommend? Thank you!"
Since "dedicated" players don't have to support gaming and multimedia functions, then there's no reason why they can't sell theirs for as little as $200.
Because they would lose a ton of money, just like Sony is with every PS3. The other manufactures are quite happy to see Sony lose all the money to push the BD format, and Sony is willing. So why sell them cheaper and lose money, when you can sell fewer, but at profits?