This theory could be confirmed by deanonizing the owners of the holders of the largest volumes of BTC and identifying them as belonging to government structures.
We could have many theories but we do know that governments do in fact conduct social experiments on a regular basis. We'll never know the goal or only be able to see the outcome once it's over.
Well, we never know. But I don't think this is created by the government. The fact that the program it is related to gambling specifically, poker. Another thing is the decentralization of it; because of it a lot of leaders of countries are not in favor of accepting or legalizing it in their countries. We do know the goal of bitcoin and we can see it from the Whitepaper of it made by Satoshi Nakamoto.