It is surprising that governments do not realize that it is the acceptance by people that gives value to these cryptocurrencies.
Governments know that, don't worry, they just don't care. If they tie their fiat currencies to a permission based ledger token, they will be able to obtain more control than ever before when it comes to money flows, people's savings, regular transactions, etc. Instead of relying on a bunch of greedy banks to monitor everything, governments won't even need banks anymore to do the job.
As much as we can benefit from all developments concerning crypto currencies and blockchain, so can governments and banks. They have the advantage that they already control the market and everything around it, so the transition to digital currency tokens won't be that much of a hassle in the end. Sheeples will obtain more convenience due to the advantages these tokens will offer, but don't know how high the price is that they pay for it.