difficult, the government can't block blockchain technology. the government can only close the sale and purchase sites only. and if it happens but there are still countries that open bitcoin trading sites, we can still trading bitcoin.
Obviously it would depend on how bitcoin runs through out the country. Mean while bitcoin is just a digital currency but there are lot of investors would gather to make some effort on giving their time and exchange there savings to have more reliable alt and in return such profit.
And government stop this if this would used in an maliscious drags etc.