If he were just an animator for Universal(animating OSWALD) do you really believe there would have been a DL or WDW or anything else associated with Disney??
Probably not, but what does that have to do with the question of whether Universal Escape would exist? Universal Escape would not exist were it not for DL and WDW. True, you can then play the six degrees game and go back to Universal causing Disney to create Mickey, but what does that prove in the context of this conversation? Are you insinuating that then Universal created Disnyland and DisneyWorld, because they swindled Walt? Like the Way the Joker Created Batman by killing his parents?
I'd like to take this moment to be offended on behalf of Walt Disney. Its like saying George Lucas came up with Star Wars, because Francis Ford Coppala Stole his Idea for Apocolypse Now! This isn't chaos theory here. Some people are just genious.
If he already had the idea for a park then why didn't he just set off to make a park???
The Idea to create Disneyland was based on numerous things going on in Walts life, among them.
The sad display of humanity apparent whenever he took his girls to the local amusment parks and travelling carnivals.
The Joy he felt when he let family members ride on his backyard model railroad.
The needs of the Disney company to stablize income in between movies (not helped by the flops that some of them were)
Now, it is correct that point three requires there be a Disney company and point 2 requires that Walt be rich enough to build the Carolwood and Pacific, but what about point 1?
Clearly Walt was a visionary. I have ideas about how to improve Disney World all the time, vast, intricate and complex ideas. Now, The reason I have these Ideas about Disney is because Disney exists, but are you suggesting that I wouldn't come up with some of the same notions with alternate stimulus?
Its just a matter of where you want to draw the line historically. In my mind, events that happened before 1955 are not direct enough to effect the conversation. And more importantly, unless you can explain to me how if Universal hadn't Swindled Walt, then they would have come up with UE on there own, you can't draw any valuable conclusions from those facts.