There are already a few governments which have acted against bitcoin, and how do you think has that helped bitcoin? It is thrown around in the media negatively, residents of a country are thereby even restricted to use it because it is banned in their country now. Also, bitcoins doesn't have such a strong backing by a lot of people that the whole internet will be fighting for them. I don't think the internet or the people care about bitcoin as much as you believe they do.
The legal status of bitcoin is different from one country to another because these rules are changing/being created slowly. While some countries have explicitly allowed its use and trade, others have banned or severely restricted it. Even different governments have classified bitcoins differently, some realize its power and embrace it while some are scared of it. Bangladesh, Bolivia, Ecuador, Russia, Vietnam are some places where it is termed illegal.