Distorted investment priorities, as wealth gets directed into what will earn the largest profit and not into what most people really need (so public health, public education, and even dikes for periodically swollen rivers receive little attention);
Worsening exploitation of workers, since the harder, faster, and longer people work—just as the less they get paid—the more profit is earned by their employer (with this incentive and driven by the competition, employers are forever finding new ways to intensify exploitation);
Overproduction of goods, since workers as a class are never paid enough to buy back, in their role as consumers, the ever growing amount of goods that they produce (in the era of automation, computerization and robotization, the gap between what workers produce—and can produce—and what their low wage allows them to consume has increased enormously);
Unused industrial capacity (the mountain of unsold goods has resulted in a large percentage of machinery of all kinds lying idle, while many pressing needs—but needs that the people who have them can't pay for—go unmet);
Growing unemployment (machines and raw materials are available, but using them to satisfy the needs of the people who don't have the money to pay for what could be made would not make profits for those who own the machines and raw materials—and in a market economy profits are what matters);