Governments and banks want different blockchains. Blockchains that'd make Orwell cry in a corner. Sure we'll get government issues cryptocurrencies: CRYPTOFIAT. All your transactions will be traced, monitored and taxed automatically.
Of course, they'll make exceptions for certain individuals...
Man... That is one dark idea... Hope that it never comes to this. What would we do if things come to this? This is why everybody should abandon Ripple, they are taking banks in to cryptocurrencies and introduing them the blockchain technology. If things will become like this, Ripple will be responsible.
Ripple is insignificant and will also go to 0. Governments will create their own closed sourced blockchains.
Cryptofiat is already happening.
https://decentralize.today/the-rise-of-cryptofiat-860cc8a2453bWe'll move into a cashless panopticon Big Brother society. Your subconscious will always be aware everything you earn and spend will be seen by government eyes.
Maybe it's not so bad for the next generation. I mean, a whole generation grew up not having lived the world before Facebook and Google. And they're fine with those companies knowing more about them than themselves. They don't hate them, they embrace them!