Marx was certain Capitalism was sure to fail as oppressed workers would rise up and overthrow the profit-driven Victorian system.
Marx was wrong. He thought it would all get so bad the workers would overthrow the system. Yet even as he was writing, reformers were beginning to get rid of the worst employment practices. Capitalism got kinder, not nastier. But the idea that the competing interests of bosses and workers would cause crises, well, that does seem relevant today.