Because as their rampant patent trolling gets called out and smacked down in more sane courts, the US will become the lone lunatic and double down on patent reforms so as not to look like the village idiot.
Of course we'll still look like the village idiot, but Apple and Samsung will at least deny the rest of the world the opportunity to prove they can do better.
Good. Unfortunately, other phone manufacturers aren't in this pool.
I'm not sure if you include Microsoft in that assessment, but they're certainly a big patent risk now that they did the Nokia & Nortel things, and they know it.
Of course we'll still look like the village idiot, but Apple and Samsung will at least deny the rest of the world the opportunity to prove they can do better.