Oh sure, we'll get a separate-but-equal version "later in the year," Skype says. They just neglected to mention which year.
Much of Skype's success can be attributed to individuals who use it, like it and go on to insinuate the service into their work lives. (It's certainly not Skype's talent for PR; I was once dis-invited to a Skype event when someone realized I was a journalist, not a system integrator.)
So it's not unreasonable to think Skype should be more politic - if not actually attentive - to the notoriously independent-minded Mac community.
On the other hand, Skype does enough of what it does, and does it well enough, to make it easy for people to keep paying them money.
Before eBay sold Skype back to its founders, eBay reported $620 million in net revenue from Skype (eBay Inc. Fourth Quarter and Full Year 2009 Results, Jan 20, 2010) with a 24% margin (eBay Q3 09 Financial Highlights, October 21, 2009.
Maybe the company's blinkered product strategy is part of that success.