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 they could then they could have done it in the first place. I think the government are trying to stop bitcoin but since bitcoin creator is so hard to trace because of the anonymomity of the people using bitcoin. Right now all they can do is to regulate bitcoin to minimize the surge of bitcoin users on a country.