This is an excellent oberservation but I would point out that all of your examples are of one group having a large information technology advantage over another

This is an excellent oberservation but I would point out that all of your examples are of one group having a large information technology advantage over another. I think the situation could be different as very powerful IT becomes as widespread and inexpensive as seems to be the trend. Perhaps there is some point where the worst IT is good enough that it's hard to parlay a tech advantage into any form of oppression and at that point it's a tool for equality and decentralization.