Bitcoin has been around the borders of financial markets for less than a decade, but is slowly gaining importance as an alternative asset class.
Can the government of any major country step in and do the unlikely?
I think yes, any government can ban bitcoin, but I don't think it will ever make bitcoin dead. Because bitcoin is traded on the Internet, its investors come from all over the world, and bitcoin does not die from a country's ban. If a country bans bitcoin, it can still trade.