There is no secret that Snow White was something that would either make or break Walt back in 1937. Snow White is a movie that I think is most responsible for what we see today. Without the success of Snow White there wouldn't have been the other motion pictures to follow and there wouldn't have been Disneyland. As it is, Snow White is one of the biggest box offices smashes and to this day is still among the highest grossing film (adjusted for inflation of course) of all time. Now, we all know some of the classics didn't do all that great at the box office. Pinocchio, Fantasia and Alice in Wonderland are movies that come to mind immediately. But without Snow White how would the Disney company look like today? Would it have existed? Would Mickey Mouse be the character he is today? What about the other movies? Does Walt take on Dumbo and Bambi and such if Snow White failed? Keep in mind this was the first of its kind, an animated full length movie.
I think without the success of Snow White there is no Disneyland today. There are no parks anywhere. Walt was the one who had the vision and without any extra money or success I can't see Disney being a revered company. In fact, if Walt still dies in 1966 in this alternate universe I really don't think the company exists today.
So what are your butterfly effect theories without a strong Snow White showing?