Personally, I believe the current system will be the status quo for decades to centuries. I do not think Bitcoin will be fully adopted during our lives.
Yes, I wouldn’t be surprised if some type of hybrid fiat, gold backed, or multi currency system prevails for another decade or two. Historically speaking, the wealthy elite do not give up control and power very easily. Many measure have yet to be played with n order to maintain status quo. #bitcoin is the antithesis of centralized control and power.