And then in order to correct this problem people decide to enact communism, or similar economic systems, that makes most people equal but not by rising their living standards but by decreasing them to the point many of those same people lament the fact capitalism is no longer in place but by the time they realize this it is too late.
The problem is that there are a lot of lazy and greedy people who decide that if there are richer people, then for some reason they should share with people like them. This has always been and is being used by dirty politicians, such as Lenin, Stalin if we talk about (the USSR), whose goal is to create an army of slaves from lazy and greedy people. They were not promised "you will work and make yourself a fortune", they were promised - "we will destroy the rich, and then everything will be free, and everyone can take whatever he needs." By the way, this correlates well with history - such regimes were actively created in the 19th and 20th centuries, when there were many poor countries, and significantly decreased by the end of the 20th century, when the average living standard in many countries increased significantly.
I'll finish - I'm against feeding embittered lazy people. Want to live well - earn it!
This is why I have always believed that movements like communism and other similar ideologies are always based on envy, some people cannot just take that someone else has more money, is better good-looking, more talented or that can do whatever other thing better than them and they prefer to destroy those people rather than to accept that fact.