IMO the industry has moved much faster than RPG's did. FF was first released in '87. I don't believe it moved the series on much in the first 15 years(FFX was the last i played from start to finish). Compare this to the progress in sports, fighters, shooters and even genres that weren't even around in '87. Going from the fifa to ISS, both on the Snes, was like night and day and that was only over a matter of months.
Just out of interest here, besides Final Fantasy what other RPG's have you played?