The 11 people thing comes from a long standing community (40 + years) that's what they have seen work... more gets stupid, less is better tho.

I've lived with 9 people in a loft before and we shared one bathroom... that was fun!

At some point we were 27 people trying to build a life together and the property we had lined up fell through... after that it was impossible to find a new one, as we tried to run things in a unanimous consent type of governance. So it eventually fell apart and we went off to do our own thing.

Dreams and ideas change... the hardest part of building something like this is finding the right people