Photoshop has been done (perhaps not as sophisticated). Maya is hard to imagine, but stranger innovations have happened.
In any case: we're in the infancy of the inter-netter-webs. Someday schoolkids will view us the way we view the early aviators with their stiff, old-fashioned suits and their weirdo moustaches.
Not to mention our steam-powered bird-o-copters. As primitive as 1980's software looks from 2008, it will look twice as primitive just 10 years from now.