That's a pretty naive question. Why did, only 100 years ago, John D. Rockafeller force his workers to work under armed guard, legally only be allowed to shop at his stores, and then have them
murdered when they tried to protest these conditions?
The answer is always the same: Because it's easier to hire a new worker, so there's never any reason to care about your workers if they can't fight back. (That makes it doubly important to make sure that they can't fight back, which the Koch Brothers are intent on enforcing, via union-busting "right to work" laws, concentrating their power with money in politics, creating false media narratives like the one in this thread, and disbanding the social programs designed to help the working class.)