The thread was closed to comments over 14 years later, after the request was marked “Declined.”
From what I understand, it isn’t just about market share, porting over one application’s code, or how many Linux users are interested in paying a non-trivial subscription fee, although those are all factors. It’s also about the availability on Linux of the wide range of foundation technologies that the applications rely on, such as color management, printing, fonts, HDR display support, etc. which are provided by macOS and Windows, as well as how willing Adobe is to port over all of their cloud sync technologies that tie the apps together (Creative Cloud Libraries, Adobe Fonts, Cloud Documents…) which Adobe considers non-optional. And which distro to settle on. But I admit I don’t know how mature the OS technologies are on Linux.