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The upper class already have a lot business, they're also make a lot money from stupid poor and middle class, so it make them can expand their business become bigger and bigger.
LOL.
Poor and middle class people are not stupid, rich people only have too much privilege in their life that's why. Also, rich people are taking advantage of those who are really in needs by giving them jobs that doesn't even pay well, so that they could earn more, I don't see any justice in that. If you think rich people are smart because they have a lot of businesses but doing something dirty in the shadows, I pity your judgement then.