have a 20 year plan to destroy the OOT? dont think so. doing things to spite the fans is just an added luxury to satisfy his life-long childish urges.

very mindful of how enormous the star wars franchise was and carefully planning to consolidate power and cultivate as large and sycophantic fan base as he possibly could in order to maximize box office and licensing revenue? absolutely.

But this also only came about a few years after ROTJ when none of his other movies were hits (except indiana jones) and he was forced into giving marcia her fair share of the revenue.