Capitalism also introduced a new form of obtaining income from production that liberates people in making them, and often their progeny as well, independent of family groups or tribes. This is so even if capitalism is sometimes prevented from providing all it might for those who wish to take advantage of it by monopolies of organised groups of workers, ‘unions’, which create an artificial scarcity of their kind of work by preventing those willing to do such work for a lower wage from doing so.