Sun Tzu (a chinese general) says :
“If you know the enemy and know yourself, you need not fear the result of a hundred battles. If you know yourself but not the enemy, for every victory gained you will also suffer a defeat. If you know neither the enemy nor yourself, you will succumb in every battle.”

That's why information is so important for politics. The better way to choose your position is to know the position of other people and determine if they are your enemy.
Of course, I also prefer Gandhi or Marshall Rosenberg non violent communication, based on truth, which is much more efficient to co-create together the world we all wish to build because we all share the same interests.
But it is necessary to be aware that wars and political strategies are based on manipulation, deception, cheating...
We can't be fully transparent as we don't know who'll use the data. It doesn't matter if we have things to hide or not because there is no morality in the data. Data is just a political tool.

I do completely agree on what blockchain may do to governments and banks. Even the concept of Nation which is at the center of the Internationalism we've lived for last decades : there is no Internationalism without nations because Internationalism is precisely what is between nations. Blockchain will lead us to Universalism or a true and social Globalism.
But we can't make nations disappear, there will be other kinds of social "bodies". This is a need of our mankind. To group in order to build something. Blockchain might be our futur nations. Without any pyramidal autority, without any government.