Governments cannot stop the transactions. It is completely impossible. But as you mentioned they can try to stop people from using cryptocurrencies by making some rules.  
But I don't think they want to stop them anymore. According to Cointelegraph, 22 countries sign declaration for european blockchain partnership. Some big countries are among these countries. Germany, France, Netherlands, Spain, Sweden, Austria, Portugal and Ireland have signed the declaration.

Just look at how the G20 meeting turns out. There are a couple of governments who put effort to at least put a stop on crypto-currency, and everyone was really excited as how the meeting would turn-out. Fortunately, there's a lot of crypto friendly countries as well, and the meeting ended on a positive note. They might put regulations though, but the meeting was a good sign that we can't be stop at our tracks. So there's always 2 side on the equation, so I doubt that they will succeed in stopping this revolution.

They'll not succeed in this fight as long is a commodity is useful and profitable bitcoin will still strive to make it's way to be an alternate way of payment, investment and income. They can drop a heavy hand on crypto currencies but as long as there are people who support decentralized system it will survive.

Cryptocurrency and decentralization all go hand in hand, and I think the government has not won against bitcoin, bitcoin still has a lot of enthusiasts and prices are still high when viewed from the history of prices.

People are tired of centralized systems and decentralization has only begun with cryptocurrency. I would consider it more of a bridge that is being built everyday. We are not there yet, but if its what the masses want it will eventually be bigger then all governments.

I believe if it happens right now then YES the government will win the fight. To be honest, it is quite easy to manipulate people. Not everyone will get easily mamipulated but the world is filled with idiots. Crypto is still in it's initial stage and not massively adopted due to which the influence of the government is more heavier and that's why right now the crypto world is facing a doom. Unless crypto gets more support from the community and gets highly adopted it will be tough for it to defeat the system.

All decisions are not governmental and big decisions. The negative information from the government is like a trap to help sharks catch their prey. The development of the market is not affected too much by the government and the media such as FB, Twitter because whales and sharks are the ones who decide the trend.

Governments can have an impact on the price of Bitcoin and other Cryptos where they can affect on

• The process of converting Bitcoin into Origins(cash out): Through this process, the government can take out the big whales from the game.
• More restrictions: The imposition of more laws that criminalize all those who have a Cryptocurrency that makes them use it on the black market only.

These assumptions need international consensus for their success, which is not available. Since these Cryptocurrencies are decentralized, the influence of individual governments remains limited.

That question should be addressed not to cryptocurrency itself but to the whole cryptocurrency community. The very survival of cryptocurrency is resting on the support of the people...without it the government will be more inclined not to support cryptocurrency and will instead do what it thinks can be the best for the situation and that can include killing cryptocurrency movement as it might not be gaining any big advantages on the whole thing. But once the government can sense that more and more people are strongly supporting cryptocurrency it can easily compromise and formulate acceptable ways and means to deal with the whole matter. The problem is that people are getting afraid to show their strong support for this fledgling industry...or am I wrong?