I would like to set somet facts straight here. Because you don't really know what you are talking about:
1. In Bangladesh, Bolivia and Thailand bitcoin is really banned. Bangladesh is the worst place for BTC so far: because "anybody caught using Bitcoin could be jailed under the country's strict anti-money laundering laws"
I am not really familiar if they are really executing this law.
- Bitcoin is banned only if countries which are weak and insignificant from the global point of view economy or either afraid that their own national currency is too weak to compete with cryptocurrency (Bolivia, Bangladesh). Or they banned BTC based on totally idiotic claims and fake prejudice (Bangladesh). Some countries (Thailand) actually start to change their approach towards BTC - http://www.coindesk.com/bank-thailand-says-bitcoin-illegal-warns-use/
2. Bitcoin HAS NEVER been banned in China. This is a lie and total misconception. Chinese government financial institution can't use Bitcoin - that is all. Furthermore China is basically controlling bitcoin mining.
I think in Bangladesh, it is also not banned because Payza is from Bangladesh and they are openly using bitcoin for depositing and withdrawal of funds in or out of Payza, I think nowadays there is no any country where people will not use Bitcoin,people all over the world from every corner is using bitcoin and they are free in that way.