GIMP vs. Photoshop - What still needs to be done?

We all know that the GIMP is more or less the de-facto standard for image editing in Linux, where Adobe Photoshop is the standard on the Mac and Windows (and some Linux boxes using Crossover Office) The question is the following: Does GIMP have what it takes to dethrone Adobe Photoshop as the standard?

http://thelinuxadvocate.blogspot.com/2006/08/gimp-vs-photoshop-what-stil...