Artists/designers have two choices today to use Photoshop - windows or mac. In third world countries, buying either is quite expensive. You get a whole range of laptops/desktops in Asia with Ubuntu installed (including Dell, HP, Lenovo, etc.). It would be really cool to open it up to the Adobe ecosystem.
Even if third world countries represent a meaningful fraction of artists and designers, thinking that they actually buy software is not realistic. Their piracy percentages are >90%.
Why do you think Adobe is switching to a network model.
Most programmers aren't artists/designers.