Mobile Linux, ever taking off?

I was reading this not-so-new post on Mobile Open Source entitled Mobile Linux going up the stack with Trolltech Greensuite.

The Greensuite Initiative should ease the development of linux-based devices. This should speed-up the development and lower the costs. Fabrizio Capobianco is very confident that this is the way to go and that Linux will eventually win the race against Symbian and Microsoft.

I think this is a very optimistic view. I have been looking for a linux device to be successful for quite a few years now and all those devices have been selling very low numbers to a very tiny slice of the market (think of the Zaurus, so cool, but so little devices sold).
Seeing Linux become a player in this space would be really great, but I think that it needs a lot of money and the development costs of a mobile device, today, are still too high to open the doors to this. I am always amazed at how Apple could take freeBSD and Mach kernel and build such as great GUI on top of it, while the open-source community has been developing X11 and other Window managers for so many years with so little success.

I really hope that someone puts some serious money and development time on Linux for mobile devices and make it real. I am just not sure that this is the event (or initiative) that will change things drastically.

Motorola has launched quite a few devices running Linux, but actually the latest smartphone/PDA that was lunched with lots of commercials and hype is the Q and is Windows-based, not Linux.