I think if you read between the lines, in the end this is about open source vs closed source. Apple & RIM made a conscious decision to produce their own devices. Microsoft sells their mobile OS specifically to run on other hardware, and makes you pay for implementation support. Google just gives the OS away, with a business-friendly Apache license, with very little to no support (Which by the way has spawned a whole new industry). Apart from that, this report is pretty meaningless. I'd be interested to see how much total revenue/profit Google/Microsoft/Apple/RIM generate directly or indirectly from their respective OS's. It would paint a better picture of who is "winning" the mobile OS war, but we'll never see a report like that...
My point was this: open source is winning.
I am not now, nor have I ever been, a member of the demigodic party. -- Dennis Ritchie