This time we don't have to read Walt's mind. From the Quotable Walt Disney book:
"A word may be said in regard to the concept and conduct of
Disneylands operational tone. Although various sections will have the fun and flavor of a carnival or amusement park, there will be none of the pitches, game wheels, sharp practices and devices designed to milk the visitors pocketbook"
Considering how well Walt read the general public, do you think he honestly didn't realize that if those game weren't fun, all those carnivals wouldn't have had them in the first place (no fun = no $$$)? They were fun for a portion of the audience in 1955, and they are fun for a portion of the audience in 2003.
But Walt obviously made a choice that people could have fun without the presence of those games (since he didn't have them). That and hundreds of other choices all added up to the Disney theme parks drawing millions of more visitors a year than all the other places, so he must done something right.
Some of us believe that it is more than just the opportunity to meet Mickey Mouse that created that gap between Disney and the rest. And the end result of Disney doing more and more things "just like everyone else" is Disney becoming "just like everyone else," yearly attendance included.
Is the single change of adding carny games going to result in the immediate destruction of the Disney Empire? No. But remember that titration experiment from chem class? You can add a drop of phenolphthalein to a solution and it will stay clear, add another still clear, keep it up and you'll end up with a bright pink solution. No one knows which "drop" is going to be the endpoint, but I do know a good way to avoid it, is to not start "dropping" in the first place.
I know there are a some people that think Car 3er's are just "the boy who cried wolf." Although, I would say we're more like "the boy who cried 'the wolf is 5 miles away, but it's coming closer, oh now it's 4.9 miles, 4.8 miles, 4.7 miles, etc." But not believing the boy the final time, didn't result in the sheep being any less dead.