They might if it is integrated (no quotes) with the call, chat, filesharing and screenshare client that they, their clients and suppliers use (and understand) if it is integrate in some useful way or maybe if it comes with some other corporate value add (data about who employees call, chat..).
Even though it really isn't marketed that way, skype is a business tool, something people use at the office. It is used by lots of people that use Office, Media Player and IE only.
I assume by the tone of your comment that you either don't think that something everyone knows and have already been using for 5 years is particularly valuable or that you are skeptical about people continuing to buy MS for any reason. Microsoft would disagree with both of these.