There are give and takes, uneasy alliances, excited cooperation, and sometimes no solutions arise and we have to be happy with lesser goals. If we hinge our political system on the few that control the mediums of communication, we have subjugated ourselves to others and may have laid the course for tyranny. Democracy, surely a loaded and complex concept if there ever was one, at its broadest connotation must, at a bare minimum, stand for the many looking out for the many. Capitalism is not compatible with this ideal. I believe even economic socialism fails this ideal, but this is a contentious assertion.
Capitalism is driven by selfish accumulation, democracy by altruistic cooperation.
Capitalism operates on a principle of exclusion, democracy inclusion. This 'Will to Order' imperative in capitalism, the craving for simplification and tidying up of messy problems obfuscates reality. Reality, political or otherwise, is messy. A masterpiece in any art form is loaded with nasty imperfections. Therein lies the beauty.