Its really simple they COST MONEY and do nothing to drive revenue and since WDW is now basically a mall with a cover charge they had to go
Just to add to your (nonsensical, negative, over-dramatic) standard dog-chasing-a-car ramblings.
Disney has added new or redone night shows to almost all of their parks in the last few years despite your claims overwise. The shows obviously drive revenue because they cause people to stay later, thus spending more. Which part of the parks do you think Disney operates that DON'T have a revenue motive? This isn't a "it's a bizznes" argument either, it's just idiotic to assume that additions or subtractions to the company revolve around money- just as it was under Walt.
Walt Disney Studios (added projection/stage show)
Disneyland Paris (multiple fireworks/projection shows)
Tokyo Disneyland (parade additions, retooled fireworks)
Tokyo DisneySea (added night show, retooled fireworks)
Hong Kong Disneyland (retooled fireworks, night parade)
Shanghai (obviously a new park, fireworks/projections)
Disneyland (retooled Fantasmic, multiple fireworks shows)
California Adventure (added multiple water/projection shows)
Disney's Hollywood Studios (multiple fireworks shows)
Animal Kingdom (added night time show, projection show)
Magic Kingdom (added projection shows, retooled fireworks show)
And in return, the TOTAL LOSSES of major night time entertainment has been that Magic Kingdom, DCA, and DL Paris don't run a night parade anymore (which stinks). EPCOT seems to be the only park that's unchanged actually. I'm glad about that- they can run Reflections of Earth for another 10 years and I'd be happy just to see some updates here and there. Still, Disney has massively increased their offerings for night time entertainment despite your claim of them "not driving revenue" (though it most certainly does).