Well if I remember correctly at the time when Final Cut Pro came out Adobe had let Premiere Pro for Mac lag the Windows version by quite a substantial amount and Apple was rapidly loosing video market share to Windows. So Final Cut Pro was Apple protecting what was left of the Mac video market at the time. Eventually Final Cut Pro running on Ti Powerbooks proved to be a big hit with broadcast crews and video production houses and was a big part of the Mac resurgence especially in video. As for Photoshop even before and during the transition to OSX the Mac still accounted for at least 50% or more of Adobe's photoshop revenue. So the decision by Adobe not to port Photoshop to Cocoa early on is frankly very hard to understand considering the fact that a substantial portion of Photoshop revenue was still coming from Mac users.