It may not be that simple, because it depends on how WWHOP affects people's decisions to come to Orlando. For example, here are three basic scenarios in my mind (and many subsets of these):
1) WWHOP causes people who were planning on spending a week at Disney to go to Uni for a day or two. Disney loses revenue on these people.
2) WWHOP causes people to come to Uni that never had any intention of going to Disney. Disney's revenue unaffected.
3) WWHOP causes people to come down to Orlando or causes people to come to Orlando more frequently because there is more to do. These people, while in Orlando, also visit Disney. Disney gains revenue.
We simply don't yet know how this will work out or which scenarios are going to predominate in the long run. I hope WWHOP lights a fire under TDO to finally unleash WDI, but I'm not sure from a revenue standpoint that is what we are going to see.
The people that waited 7+ hours to get in last weekend, I think were category 2 people. Personally, I am a category 1 person. My sister-in-law is a category 3 person. And, lets consider this, I am a category 1 person so I will either extend my Orlando vacation or Disney will lose a day or two of revenue from me (probably the former, so their revenue will be largely unaffected). My sister-in-law is a category 3 person. Disney will gain at least a day or two of revenue from her (and those early days of revenue make more money-i.e., a two day pass is much more money for Disney per day than a 5 day) but may even get 4-5 days of revenue.
I think it is very possible WWHOP will not only NOT hurt Disney's bottom line, it may even help it. Would it have been helped even more if Disney actually had WWHOP, perhaps, but we still don't know. "Revenue lost is revenue lost" is not the entire story when it takes investment to make revenue. I bet UNI will have a much higher return on this investment than Disney would have had if it did WWHOP AND it's even possible Disney is going to be getting a return on UNI's investment, which is just free money. We just don't know yet.