I’ve not referred to cost as a justification. What I have noted is that the show seems to have lost its appeal to the vast majority of guests, which makes it unsurprising (in my view) that Disney would want to update or even replace it. In another thread,
@lentesta shared that CBJ is among the lowest-scoring attractions at the Magic Kingdom, which is valuable information that helps to move us beyond personal hunches and anecdotes. It saddens me that people don’t enjoy what’s currently there, because I think it’s a masterpiece, but I’d rather be realistic about the situation than cling to the hope that Disney is just going to let an unpopular show continue running unchanged.