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?
I think not all government to all country is have the same thinking about bitcoin some of them think that bitcoin is a big help to their economy and their people. And some them are ban bitcoin to their country because they scared that bitcoin will be choose their people than to their own currency. There's a lot of circumstances and reasons but I think they never kill bitcoin.