Apple had a big opportunity now with Vista getting bad reviews to grab a lot of marketshare. A lot of people now are thinking about getting a Vista PC since Leopard isn't ready. This is costing Apple money in the short, middle and long-term.
95% of computer users don't even know that apple is planning on releasing a new operating system. Hell, half of mac users don't even know the difference between panther and tiger. get out in the real world. only nerdcore kids even pay attention to this stuff. most people just see some hip kid with a white computer and a pretty interface and want it. It's like a sports car. Most people just see it and want it, and know nothing about the fact that it was originally planned with a faster engine, etc and the company reneged at the last minute.