All three types of groups of possible manipulators are excising in the space, I am quite sure of that. But let's say there are such powerful forces. So they collect vast amounts of Bitoincs (other altcoins) and USD fiat. So on the other hand some of those groups would be in conflicting interests.... shorting BTC or interested the price to grow (miners for exampe). So as the market is unregulated, there is always a fight: Bulls vs Bears. In my opinion this is a natural cycle we are living in, without too much conspiracy about the precise price targets, when it comes to FUD on media, or negative moods from govs etc. Yes such powerful structures as governments, regulators they are influencing the space, but I am not convinced that this is done with precise planing.....
I have never seen any evidence of such evil activity yet.