Brian, to be sure I love the article, and have great respect and admiration for the folk involved, thanks for posting. It is a very informative and positive view of an amazing technology worthy of the highest possible support.
To me, the only thing holding the project back is the world economic system tendency to divide effort into different teams around the world, who necessarily then have to hide and patent all of their work from one another, as well as from all the other potential geniuses in the world who might positively contribute to it.
It might even have been all done and dusted years ago if it were not for that tendency, all driven by the basic systemic need to seek profit from the outcome.