A cutback is when a service is no longer offered in any form. That's not the case here. Transportation will still be available all the hours (and beyond) the parks are open; it'll just be by bus some of those hours
instead of by monorail.
Change, not cutback.
Then you would have to believe an über-successful company like Walt Disney World has a single, lump-sum, general budget line item called "improvements and stuff". I've never seen an annual report, but I can tell you they don't.
While it's
your opinion the accountants neglected to properly fund maintaining/upgrading the monorail system, it's
my opinion that it's not the funding at all - it's there - but the guest outcry.
Look at this thread. Granted, some of the posts/pages have strayed varying degrees off-topic, but a number of posters are upset that there may be a night or four/five

when they'll have to take a bus or boat, or walk, to their resort instead of being able to use the monorail. Now try to imagine the reaction if the system had to shut down for X weeks or months? Maybe the problem isn't the trains - maybe it's the tracks.