I think that BTC is not the masterplan of a Government or a bank/ multiple banks, would just make no sense to give away the power they have in the current situation (controlling money).
This was basically Jamie Dimon's point when he said Bitcoin would get nowhere.
However, there *is* a way for the Western elites to profit by making alliances with a decentralized money. They did that with gold and silver for centuries. In fact, I would argue that it is more preferable to them than the current 'fiat' system (since the last 40 years of 'fiat money' were among the most financially unstable decades of modern history.)
So, in a sense, the appearance of Bitcoin was perfect for them, if they didn't plant it themselves. That might be why Bitcoin has done so well.