You know, most people have computers that can do what live does better for free. consoles are for gaming, like hell if I'm going to watch that crap ass encoded Netflix for money or use Last.FM when Shoutcast is a better way to go (there is an app for that too, <3 smart phones, I use Shoutcast on the road as my primary music source.)
Those live features can be done in a simple web browser and there is nothing like dev IRC sessions or simply go straight to their forums. You don't even need a gaming machine to do all those and who the hell has internet and no computer? Nobody gets internet just for a console or 2 unless the person is obsolutely retarded.
Live has xchat which is really why it's better than PSN, it's definitely not worth the 50-60 bucks you pay a year, and on the flip side, no xchat on PSN but you don't have to pay a dime to play games online, which is actually a much better value than xchat for that amount of money.
I have consoles for games, games, GAMES! It's a no shit that the PS3 is a better value when it comes to pure gaming. Not to mention that the supreme VoIP app right now is Mumble, nothing on consoles can even touch that thing, no other VoIP in the world is better than Mumble for gaming atm, and that's free too.