Since you're all so good at spelling, Here's a little thing called math...
In 2013 the Magic Kingdom's attendance was about 18mil people, Universal's IOA/Harry Potter park was about half that at 9mil, and Universal's original other park was about half of IOA at 4.5mil.
While no one can prove how many people only went to one or all of these places, the numbers seem indicate that half of that 9mil who went to IoA went to both Uni and IoA last year, and the other 4.5mil went some where else or went to IoA twice, or let's say the also went to the Magic Kingdom.
So if 4.5mil people in 2013 "only" went to the 2 Uni parks, and the other 4.5mil both Uni and MK, that means there were about 13.5mil people who "only" went to MK in 2013, and had no interest in Uni or Harry Potter. So are you implying that if Disney had built Harry Potter on their own property it would some how make it more popular than it is at UNI? Because that's seems to be the argument being made by this dumb article...
If roughly 13.5mil of Disney's guests didn't care to go see "Harry Potter-land part 1" last year, why would those same people suddenly want to go and see "HP-land part 2" this year? that doesn't make any sense, because there was about 18mil people who paid to get in MK last year, 11mil paid to get in Epcot, and 10mil at AK, and another 10mil at DHS, for a grand total of about 50 mil, and they also bought food and merch and rented a room and of that 50 mil, theoretically? in best case scenario? only 4.5mil, about 10% also went to see Harry Potter, and I'm assuming that more that 10% of the people who go one of WDW parks on vacation go some where "besides" WDW anyway.
People keep wanting to believe that because Harry Potter is very popular among "some" people that it is some how popular to "all" people. Star Wars is very popular among "some" people, but not "all" people want to pay the extra price to go to a Star Wars Weekend. There is a limit to how popular a movie or IP is, and how many people are interested in paying to experience it in a theme park