Large scale? No. However, it has been done before. For example, for open source Amiga development work...
So it hasn't been done before since scale is key here where toy solutions to coordination problems fail
There's nothing stopping the idea from scaling.
Really!? A good idea .. just scales? Is that how you view the world?
A good idea is nothing without good execution. And execution requires patience, coordination, a good amount of luck .. and so much ideas.
It is like what they say - Ideas are infinite. Nobody cares about them.
Could you actually provide any examples of large-scale software projects working this way, and not the usual way with coordination being done by special people or w/o any (e.g., by the devs)