Bitcoin have a lot of benefits and could affect a countries economy positively due to it's transparency and inflation hedge, however my major point of focus is on inflation. Alot of countries are undergoing inflation currently especially in countries with bad governance, high crime rates and war. Sometimes it's takes a long while for some countries to get out of inflation. But Bitcoin is known for it's volatility and can serve as an inflation hedge to their economy if only they could adopt it's use for transactions or as an Alternative to fiat. It could be beneficial in several ways because.
1. It is the fastest way to combat inflation, due to it's limited supply, making it more scarce and costlier, which could help strengthen a countries economy.
2. Bitcoin has a transaction cost making it easier for financial industries and traders to carry out transactions without worrying about high cost of transaction fees.
3. It's transaction rate is quicker and can help, business men, traders and individuals transact very quickly.
4. If a government accepts Bitcoin as a alternative to fiat
it could make currency exchange effortlessly and it cannot be influenced by corrupt governments officials.
5. I've seen no reason why some countries would be fighting against Bitcoin instead of adopting it into their system, I think any country doing that is fighting a lost fight and would be forced to accept it on the long run.
I believe you guys do not understand how the country's economics and government investments work, that's why you often preach about this the way it is common on the forum. Bitcoin is not the world's saviour when it comes to the economy and never will it be, just treat it as an asset, and that is all. It is true that Bitcoin can enrich some citizens and governments if they can take the high risk, but can't do more than that for the economy. What helps the economy is internal, and this is why the Policies, the GDP and the Trade balance must be ensured to be positive among others. Bitcoin is just an asset and governments often have enough assets all over the world, so it mustn't be Bitcoin, while many are also being bought in the form of Bonds.
Now, you can see that it depends on the government if they would be interested in the purchase of Bitcoin or not since it is not by force, and do not forget that no government in the world lacks asset purchases, they do it periodically. You are only suggesting but many of them have enough assets that are yielding and are hedging inflation both at home and abroad. Fine, Bitcoin would have been an added advantage, nevertheless, you can't blame any government for not buying it or trusting what they do not believe in. Governments often believe in what is centralised and that can add to the economy directly, and I respect that, but Bitcoin is not that thing. Illicit flows are also a concern.
You are only thinking about the money that can be gained, but when it comes to the economy, Bitcoin can't help since it is decentralised. This is unless the transaction is passed through a centralised system like ETF, exchanges and others for proper records and accountability. Some economies are even suffering because many citizens' FX inflow can't be traceable/accountable to their country of origin due to the decentralization of Bitcoin. Is this what you say would help the economy?