I have seen a few of these with similar story lines and realized we are living it right now. They have the best healthcare, the best food, the best everything and most of us are a few dollars from disaster. That scares some of us to death literally from all the stress it causes.
The problem: human nature is such that those who overthrew the tyrants would shortly find themselves in power. They might even be just and true leaders. But inevitably, greed will out. I suppose the silver lining is the resulting system of oppression might not be so… efficient as it is now.
The current system is in part because the rich got there by taking it from the previous leaders - every country has it’s revolution story, sometimes multiple ones - and they don’t want it to happen to them.
So more likely the new system would be even more efficient.