Nice post, hadn't seen it!
It's a mathematical thing. There's no ill intent on the part of the stable coins (or whatever you want to call them). It's just something that is bound to happen, in a free market... and cryptos are a fairly free market at this point.
You're right about the corporations planning to exploit this new world to the best of their ability. I think new real cryptos will appear, to counter this new government and corporate digital currency push. At the very least it's interesting.