What shocks me is the lack of competition in this field in the year 2011. Why are we still talking about choosing between GIMP or Photoshop? I know there are other programs out there that some people will claim they prefer over GIMP or PS, but for most of the planet it's GIMP or PS.
Is the lack of competition due to the magnitude of such a programming endeavor or is it something else like patents? Any idea?