I think that is a question the world over @janton. What are the almighty States going to do about the threat posed by the various cryptos? There have already been attempts to stop them, jail those found with them, etc.

So far, those attempts have failed to stop the "advance" of the cryptosphere.

My own concern has more to do with the power of the State to tax. It is a big deal to ensure we are adequately tracking these investments and a big decision, once done, to calculate the taxes owed. And then, of course, whether or not you report honestly and accurately ...