They create privatization of the land and work, which controls the means of production while exploiting peoples labor. Monopolies contribute to capitalism, as the saying goes, "the rich get richer and the poorer get poorer."
Monopolies should not exist because that gives one singular group or company complete control over a specific industry. Whether it be oil, cars, boats, milk, or meat, if one singular company controlled everything within that industry the people would be submissive. We would have no power and have to follow and continue to buy these items at whatever outrageous price because there are no other competing companies with other cheaper options.
