What's sad is that you think you're the one being realistic, when your theory of change is complete fantasy.
What we're talking about has been done and accomplished before and exists in the real world, including the largest nation on earth. What you're talking about has never happened
The Soviet Union lasted for decades and at the time was on the cutting edge of science, math, industry, social sciences etc and became the second leading superpower only 20 years after forming. Pretty successful if you ask me. It took the US over 100 years to do anything similar.
Then there’s China which is looking to be even more successful than that.