While I agree with you, it is never going to happen. Japanese camera companies are beyond secretive when it comes to their products. They would never, ever allow themselves to lose control, which is what would happen if the firmware went open source.
I would not say never. I is about money, if they somehow could see that making the FW open source and free would make them more money, they
will follow that route. Big companies like IBM do not put huge resources into free SW because they dislike capitalism, they do it because it is good business. They sell more hardware and services because of it. I think Fuji would too, but Asia at large is quite a bit behind the western world when it comes to free SW.
Just look at RAW files from the X100. I could process and open them with a patched version of Dcraw the first of Mars, long before the camera could be bought in a store. The RAW converting SW actually did not need much change to handle the X100 files, a few rows of code only changed in the patch. But thanks to the free software community, free SW was first to open X100 files, all it took was a couple of RAW files to escape out on the net for hackers to hack on (later the long list of commercial apps that builds on dcraw, as most third party apps do)
Without this ability to open RAW files from the X100 i would not have ordered it to begin with, and i am definitely not alone in this.. I do not use anything else then free software in any of my computers, the X100 would almost become a worthless brick without the ability to open its RAW files. With the FW open and free, a lot of people will buy it just because of it, and this is many people with a combined knowledge that exceeds the knowledge at Fuji. It works like an ant colony, where the collective intelligence superseed any single contributor.
I think we will will see free FW in future cameras, but it may require a generation shift in the leadership at the companies first. But it will go follow that path once any of them start, then the others will follow out of pure competition.