Hah, sounds like a title for a book) In fact, this topic really deserves to be written about this book (if it has not yet been done). But seriously, most likely the government of most countries in the world will not succeed. Bitcoin and other crypto currencies are the future. And progress as you know can only be slowed down, but not stopped.
I am definitely on the side of the ethereum. Because it is much more sophisticated from a technological point of view. I think it's easy to notice from the fact that the overwhelming majority of ICO are based on this.