Governments have already started to monitor the rise of bitcoins, once bitcoin gets mainstream enough, the value and market cap of bitcoin will increase significantly, then will come the time when the world powers will see it as a major force of economy, some will resist it and some will adapt to it.
Thats true. That's why so many enterprises do research in the field of Bitcoin and related stuff. But, I think the breakthrough will not come that quick. Bitcoin is still hard to understand and to handle for 99,9% of the people.