Same claims have been made about codecs. "Only elite can do it", "you can't make it open" and etc. Yet, we have great open collaborative projects today for state of the art video and audio codecs. So it's not a technical issue.
I wouldn't cite open source codecs as a success story ...
A GUI toolkit is probably more on point and of the correct scale, and those also demonstrate that without significant backing from somewhere, progress doesn't get made at that level of complexity.