It's possible.. Probably one day somebody decide to make something that you can't see or tuch and get rich by it!
For all governments, decentralized cryptocurrency is a very big problem. Therefore, no government, I am absolutely sure of this, will begin to do harm to itself. Therefore, I do not even admit the idea that any government may be involved in the creation of cryptocurrency. Unless the situation can be as always simple: they planned to create something else, but they got a cryptocurrency, which then "escaped" to the people.
The reason for greed to make sure that their illegal act can't be seen by anyone or they can use the platform to liquidate assets without a trace, it's very possible to those people who you can't trust around any government places. Chances still possible even in a small portions knowing that in somehow there's greed inside anyone and if this chain can be use to hide it is possible, only time can reveal if there's government behind, for now it's still remained uncertain.