Stopping bitcoin to operate is out of their hands and not really possible, but what they were trying to do is to regulate and have authority over BTC so that they could exploit it and make good use out of it. It's not like all countries are against cryptocurrency. In fact, there were many countries that legalized BTC on their own territories, such as the U.S, Japan, and U.K.
Government have the capacity to prohibit people from using bitcoin in a country if the negative impacts outweigh the benefit. They can impose stricter rule if they don't succeed in preventing their official from laundering money with bitcoin and I think the government can still do it. But so far I don't think they will do it while they are profiting from bitcoin.
Government will not come together to fight bitcoin because they still have the will of their own to go for it. Usually the regulation will be lenient if the world government applies friendly rule for bitcoin and cryptocurrency. I'm sure most countries would reconsider their rule if that scenario existed. But I know that the government still wants to make bitcoin a controllable (centralized) asset but that is still not possible.