All that was shattered with their new Macbook lineup (which are pretty much just beefier MB Airs). They flat out killed the 17" (which I still consider the perfect on-the-go workstation).
I considered Apple very relevant around the iPhone release. The current direction is not the iPhone direction. It is the iPad direction. That's when they started to go somewhat batshit on driving away professional users. They could have maintained both camps pretty handily in my opinion. Both camps were quite happy and got along great. Why they decided to kill off one is beyond me. Sure, there is more money in everyday clients, but I doubt they were actually hurting their business with power users.
Consider this: When I - a staunch defender of FOSS, user of Kubuntu, Free Software programmer, ardent antagonist of everything Microsoft - got my Macbook, I actually started recommending Macs as a choice to others. It actually did seem to me a better choice than going with Microsoft Windows. These days, I recommend Windows 7.
That's what they have accomplished.