The answer is in both ways, it could be a blessing and it could be a curse, it depends on the leadership of the country. You can imagine Nigeria blessed with crude oil and other mineral resources that can't be finished still retarding in progress. But there are many countries without crude oil and hardly have mineral resources to sell but still found their ways around it and are doing better than Nigeria. This is where creativity and leadership come in. Good things in the hands of bad people will never be allowed to show their goodness.
Practically, if a good country is blessed with crude oil, it should use the proceeds to harness the potential of other aspects of the economy and invest also in the people. But the reverse is the case in African countries, for example, they just relax and become reliant almost solely on crude oil since it is free money for them. Imagine countries having an income source of over 85% crude oil, some are even worse than that. What will they do when the crude oil is finished or the fight against carbon emission is finally won and petroleum fades off? These are countries blessed with good lands for agriculture, but laziness, corruption and lack of vision for the future have entrapped them.
That is true, it all depends on what you do with it, and there are a lot of places that will not do well due to corruption. This isn't just about X nation or Y nation, there are dozens of nations with corruption, and that means it may not end very well at all, we need to just consider how things could change over course of long time. We need to realize that we can't make it work, and this is why I believe that we need to keep on working to make it as best as we could, which would be a lot more beneficial to everyone.
This is why I think if we could have no corruption in politics, that would be a lot better and crypto could be used for all of it. We could just use blockchain to keep track of financial statements of everyone in the politics, and we could use stuff like warren buffet says, like if debt goes over certain gdp, nobody gets reelected.
These type of things could help everyone, and eventually people who will be good could end up with the position instead and properly run the country. Most people do not realize that they are being fooled, they are just told to hate the other side, and because of this we are ending up with a situation that is going to end up with a result with us not looking at our side being bad.