This is something which I've beleived for awhile, which is the prospect that if big governments and banks worked heavily together they'd be able to remove Bitcoin from the face of the earth. They wouldn't ban it, as that would be a tough thing to swallow for the American people as they wouldn't see a good reason to do that ( at least in my mind here) But they could just go ahead and regulate Bitcoin into oblivion, making it hard for Bitcoin businesses (buying and selling, trading, etc) to operate within their countries, or be subject to insane taxes, KYC AML and such.
Do you think Governments could kill Bitcoin?
If the governments could not benefit from bitcoin, then I think they will do everything to ban bitcoin. Governments always wanted percentage from all "business related estanlishments" and money generating products. Bitcoin is not exempted to that because it is always related to money. If Government cannot ban bitcoin, then atleast they could regulate or control it in all ways they wanted.