As these contrasts show, capitalism has undergone enormous changes in the last two and a half centuries. While some of Smith’s basic principles remain valid, they do so only at very general levels.For example, competition among profit-seeking firms may still be the key driving force of capitalism, as in Smith’s scheme. But it is not between small, anonymous firms which, accepting consumer tastes, fight it out by increasing the efficiency in the use of given technology. Today, competition is among huge multinational companies, with the ability not only to influence prices but to redefine technologies in a short span of time (think about the battle between Apple and Samsung) and to manipulate consumer tastes through brand-image building and advertising.