It's scary that one entity can do all this. Makes me fear what banks might do, since they can definitely profit from shenanigans.
Well, if banks want to do this, they would need to first own 200,000 BTC... so that would pump the price too. They could create fear in the market by pumping and dumping recklessly, but that would be short lived. Long term, the fundamental remains: 21 million coins. It doesn't matter how much you shake the box to create chaos, ultimately the order remains, they can't change the rules. This is why Bitcoin is the best long term investment, because they cannot change the rules. The can change anything else, except how Bitcoin works.
And as long as nothing is changed in bitcoin's protocol to favor them, they will just have to deal with it that way. You are right bro and satoshi obviously fashioned everything out from the start, if you dump, someone else is ready to pick up, and since we have limited supply, that would make it even easy for more people to want to buy at that lower price and like you said, it is a cycle and it will keep going on that way.