Walker insulted Roy E and told him they were not going to let him have any input. That is what started the machine in motion to out Ron. Ron's tenure saw some great creativity - EPCOT, Touchstone, Tron, The Black Hole, The Rescuers, The Black Cauldron - not huge money makers, but like Walt - they kept swinging for the fence and took chances. Most of Walt's movies didn't make any money either - but when they did (Snow White, Mary Poppins), they funded his ideas.
I don't fault Eisner's era - he had creativity and didn't just buy it like Iger did. It's a shame Eisner couldn't keep himself together.