I'm not sure if Google is really the hero at this point like other commenters are stating here. Maybe they bought 3 times more patents than MS/Apple but it's not clear to me if all of those are really interesting in this fight.
I have to admit that I just don't like the Google way here. Saying that patent system sucks and and patents are bad but buying more and more patents is just silly don't you think? Plus they said that Nortels weren't worth 4 billion but they bought 3x patents for 12,5 billion. It's just the same ratio isn't it?.
Let's just see how this will end.