Things are more complicated in real world, because even if massive wealth is created (say, a boom of a certain industry), it doesn't necessarily go where it's supposed to.
Here [1] there is a real-world example of how, in a country with a strong mining industry, the "colonialists" get all the money, and the "colony" gets the crumbs (of course, that doesn't imply that this is always the case).
[1] Published long ago on HN: https://psmag.com/why-is-zambia-so-poor-f44dfeedd5ed
Personally, I think it's the difference in mentality between lottery winners and builders of successful products (who often work within difficult constraints and have to become very good at problem solving to succeed). There's a reason why lottery winners do not typically compound their success.
It's not much of an aspiration, but it is, strictly speaking, an improvement. It's also not a hypothetical: supply-side economic demonstrably works, to some extent. It just doesn't work very well, and we should be able to do better.