yes. just as it demeans men, trannies, youngsters, and every other actually existing individual that is not part of the upper crust (and maybe them too).
if you meant to ask if capitalism is a particularly patriarchal system, i would say: systemically (and ideologically), probably not. capitalism is about profit, and a corporation's primary (some would say only) responsibility is to maximize shareholder profits. nothing gendered about that. if a company could make more profit by turning patriarchy into matriarchy, it would not think twice.
but in practice, women are typically exploited even more than men (ie, pay scales, sexual misconduct, unpaid household work, etc). patriarchy does impact virtually every aspect of modern life as i know it, and capitalism is right there to piggy-back on it.
[edited to add another example in the above paragraph]