Bitcoin was just simply overvalued by crazy Chinese gamblers... it went from 100ish to 1000 in a month. Now it is going back to its market value. Nothing special about it. No need to think of conspiracy theories.
Bitcoin is always at its market value.
It doesn't take a conspiracy among governments, merely commonality of interest. To the extent that governments are beholden to banking and to the extent that bitcoin presents competition to banking in both cost reduction and transparency you will see what looks like conspiracy but no conspiracy is needed to do this. So whether there is or not the same effect should be expected until some smart banks break ranks and want to be the leaders in the new model.
Then you will see the real action... when banks compete to adopt it.