Err... take a look at patent law suits going on at the moment... everybody is doing it to "protect" their rights/positions... for starters Microsoft has suits going against Android but as it isn't Apple I suppose that's OK, and some other small company has suits against nearly every tech company and... mostly they end up with an out-of-court settlement and swaps of the rights to use each others patents plus vast profits for lawyers... now there's a real target...
and +1 to kjk for putting the point so beautifully... even though I reckon there's a lot of links missing, but then you wouldn't see the diagram for lines and arrows...