Totalitarianism and capitalism aren't at all mutually exclusive. Likewise, there exist other isms. Democratic socialism, for one. (Although it can be argued that it's capitalism in sheep's clothing.)

> totalitarianism and capitalism aren't at all mutually exclusive

Well, too much further discussion along these lines will turn into a semantic quagmire. However, you can draw a spectrum where "individuals decide for themselves" is on one end and "a central power decides for everyone" is at the other. In that viewpoint, capitalism and totalitarianism are at odds, regardless of whether the central authority is an officer of a government bureau or a corporate one.