I really doubt there are a lot of people out there saying "Oh, I was thinking about getting a Nokia tablet, but then I heard the Wifi and battery handling source code was closed, so forget about it!"

There's less than 10% of the source that's closed. You really believe the average consumer cares about the source *AT ALL*? They don't. It's only the programmers that care about that.. and they don't seem to mind and are even working on their own open sourced versions of the closed packages.

I guess the iPhone's so popular because it's 100% open source, hmm?