Oof! Somebody took Karl's kool-aid.

So, first off, it's not the capitalist system that is at fault for the miners not having a back-up plan after the coal mine dries or coal is not marketable anymore. It's due to corrupt politicians and lack of foresight from the constituents, that's at fault there. But that's to be expected. Most people are unable to plan their life with more than 5 years ahead, imagine a whole town working for commodities company where they don't have enough education to understand the complexities of the market. It's simply nearly impossible. The only place that I know that did something like this is Norway, where they have a trust fund coming from all the oil money, so when their oil dries up, they can still live out of that money for a while.

And as you can see from my previous paragraph, that's not something that communism or socialism can change. That's human nature. Cuba is not a shit hole because the US embargo, it is because Castro wanted its own SimCity. The same goes for Russia during the Soviet era, or China even now. Corruption is endemic of the politicians. And that's a fact. No system survives corruption.

Finally, addressing the whole "history is a class struggle". That's to say a lot. You could say that human history has inherent class struggle, and that's fine. But in reality, history is not defined by class struggle, more than could be defined by change of ethos, power dynamics or even whimsical change of heart. It's too simplistic to say that everything has been a class struggle, because it simplifies human emotions and desires to materialistic possessions.