It goes without saying that this twit has no clue.
Capitalism REQUIRES that the capitalist provide something of value that the marketplace (that is to say, PEOPLE) are willing to pay for, in order to succeed and grow Rich.
Bill Gates didn't get Rich by taking money from Poor people, and his accumulation of wealth was at nobody's "expense." He created a cornucopia of computer-based products that people were willing to pay a lot of money for - not because they are forced to, but because they believe that his products are worth MORE THAN the money they pay to obtain them. He gets rich, and his customers generally become more productive. Win/Win.
Donald Trump didn't grow rich by stealing from people, but rather by developing projects that investors, lenders and consumers WANTED, and were willing to pay to get into. In the course of. making himself rich, he made tens of thousands of people happy. And of course, you can't make an omelet without breaking some eggs, eh?