They are not letting bitcoin as it is, the fact is that most country is not aware of bitcoin yet therefore they seems to make it looks like that they let it go without any proper guidance or rules on it however it is not like that. Either way, whichever ways they choose it wont effect bitcoin totally, just partially
Believe me, all countries are aware of Bitcoin. Even third world countries.
Some governments even see Bitcoin as currency as a real threat to their economy. That's why they try to make it very difficult for people to use Bitcoin.
Some countries may even put you in prison for using Bitcoin. It's beyond ridiculous, but it's real stuff.
Do you know of anyone who did actually get behind the bars for just holding Bitcoin (I don't mean tax evasion or things like that)?
How real is that?
yes, look no farther than venezuela, two guy have been arrested because they were mining, not even dealing with bitcoin directly https://www.cryptocoinsnews.com/report-two-venezuelans-arrested-mining-bitcoin/
This article says they were arrested on the pretext of smuggling goods since the guys didn't provide the documentation for the machinery. Whether or not this is related to Bitcoin mining as such remains to be seen. Let's wait for the court ruling...
If the guys manage to survive the proceedings, of course