Leak after the Feb11's hole opened was enormous. Of course, it didn't dry out Nokia's Linux talent completely but made it so scarce that it is now less different from others in this respect. Intel gained many of those talented people, as well as other companies benefited too. Specifically, kernel developers flew out *a lot*. Perhaps, Nokia is lucky that their v4l2 contributors are still on board, but their kernel generalists are happy to work at other places, continuing to contribute to the upstream.