Many governments are looking at this option. Since the blockchain is relatively new and is yet to prove itself through time, it's only wise for the governments to wait a little and watch how it evolves. At the moment, many researches are being carried out about ways to implement this seamlessly without causing a hitch.
This is true. Government must try other things that might help to improve the economy. It might be a not so good place to start gaining, but it is worth it. And if we talk about corruption, it is not really clear on how itmust be implemented, it needs to go thru different process to be understood.