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.
And yet there is one option in which it is possible to suspect that the government could be involved in the creation of cryptocurrencies. The fact is that, as always, officials and government organizations very often steal government funds, and also use them for other purposes, and therefore it can be assumed that Bitcoin, which assumes anonymity of the user and independence from state systems, makes it possible to avoid taxes , from prosecution, thus giving the government unlimited possibilities. Perhaps even precisely in this lies the reason that many states still do not want to fully recognize and realize cryptocurrency.