The answer then is maybe run like the Goretex model where once a business group gets much over 300 people in size you split in two and diverge. Around 300 peop

The answer then is maybe run like the Goretex model where once a business group gets much over 300 people in size you split in two and diverge. Around 300 people seems to be where the ability to be personally familiar with everyone in the group starts to drop off. Larger than that it is like another step down the scale: friends->acquaintances->friends of friends->lowlife from around the corner you've seen once or twice and that might have killed your cat. Then, it is easier to do something with lower regard and care towards another person you don't really know that well and aren't likely to have to socialise or eat with in the future. This shapes cults as well, there is a name for the number (I can't remember at 2am) and I have seen varying sizes from 200 to 450.