this is indirectly related https://www.scientificamerican.com/article/is-inequality-ine... is an huge takeout from the simple fact that (1+delta)*(1-delta) < 1 with 0<delta<1

here I attach a mini program where I show that of course the gini coefficient in the group growth (in this case the yield is always negative but total wealth of group constant): https://pastebin.com/L5sSM09V