Bitcoin is evolving, and as popular as it seems, we are still at the early adoption stages. It will certainly revolutionalize the world's economy by changing the game for the government and people of the world.
Obviously it will. Look at the way things may be going with the fiat system and economy simply crushing somehow with inflation. To me, bitcoin may actually be perceived as the digital gold which is going to be saving the day in that case. I am sure just like you said, it is too early to start seeing it as a huge part of a huge economy in the global perspective, but I believe over time, it is definitely going to be and government would not have a choice than to let it be.
Bitcoin is the community and as long as there would keep being supporters who see the dire need of it in their daily lives as currency, I do not think it would be that easy for any government to just want to fall that apart and as long as we are not divided among ourselves as well.
The thing here is that if government could screw the whole thing up, they would have done that and the more they keep making attempt, the more it just keeps growing and exposing the fiat loophole which decentralization is causing to the whole world. I do not feel the world economy is centered around bitcoin anyway.