This is all about studying the everyday life of specific settlements. I mentioned this earlier, saying that archaeology can provide a lot of interesting information here. I expressed doubts regarding economic and political interaction.
In the example with ostracism, it is clear to anyone who can read that the city's population possessed real (and not nominal) power and could exile undesirable citizens, including those in supreme power. Moreover, it was precisely the citizens of the city, and not the ruling elite.
In the example with Mohenjo-daro: toilets, statues in large quantities, division into a citadel and a lower city = trade, service sector, division into military and civilian classes. :D Something like that.
I won't even talk about the yoke; if several dozen mass graves with traces of violent death from different time layers do not convince, then nothing can convince.

