IMO i see is as reactionary, despiration, and one last hoorah investment from a company who does not necessarily want to be in the Theme Park Business (blackstone). Universal sure has been trend-setting in Orlando for the past 20 years, haven't they...
That may have been the case for GE or Comcast (former/current part-owners of Uni), but not Blackstone.
Blackstone very much wants to be in the theme park business as shown by recent deals made with Uni Japan and purchasing Busch parks. As a private equity firm, their goal is to buy a business, trim the fat, turn it into a money-maker, then sell it, spin it off or hold it (whichever is most profitable). I don't think they'll sit idly by and let an assett like Uni Orlando decline in value.
*** The way I see it there is a relatively low incline curve of tourists dollars coming into to Orlando (particularly in the current/near future economy). There will be a small spike due to Potter in 2010 which may benefit Disney, but in the end, all the area attractions are competing for a piece of the same pie - just as they always have. The pie may get a little bigger for everyone, but with Potter, IOA will be getting a larger slice of it in perpetuity... this will come at the expense of Universal Studios, DHS, EPCOT, Animal Kingdom, MK, SeaWorld, etc.
It's a zero sum game. We could see something like this: (using rough numbers):
2008 Market Share:
WDW 73%
Universal Orlando 18%
Sea World 9%
Potential 2011 Market Share:
WDW 67%
Universal Orlando 25%
Sea World 8%
If things shake out that well for Uni, I would hope Disney would react strongly to entice people back to spending those off-property days at WDW.