See i noticed that china government ban cryptocurrency because they are not benefiting on like before via crypto mining, that's from my perception" so some countries who knows quite well of cryptocurrency and also sum the profit china miner's return as revenue  has taken it upon their self, base on what you said about (Kazakhstan), now this country have noted that mining of cryptocurrency will help to boost her economic system, so from the estimate measure of profit generated through the source link of op it's obvious mining is another method that can elevate a country if measure is taken proper to embrace crypto fully in a Nation, despite of  the heavy consumption of electricity the process of mining consumed, i would have say that twenty percent (%20) of countries have to adventure into mining.