And it will remain so for a long time.
No government, no parties can effectively ban it and put their hand on it. They would have to ban internet first. Not likely.
That would be the end of free world we know.
These people don't have to prohibit this straight to outlaw this. Let's say fiat cash created from promoting cryptocurrencies had been announced unlawful? Even though you experienced vast amounts of bitcoins, they'd end up being useless since you would not have the ability to money away lawfully.