Why? Because our government don’t want you to invest to it, they don’t want you know about it and they don’t want it to be more popular. And why? Because they’re corrupted by the bankers who paid them.
Yes this is also some kind of oppression of freedom and democracy, but the difference is the government won’t be suspected with this because they have the monopoly of what is right and wrong. If only the people will unite against this, the government can’t do much but just to regulate and can’t ban cryptocurrency.
This would change the game and its popularity to a higher level when the revolution of the people be recognized by the states.