Agreed, I have heard that the cost went up to $350 million but $200 million is the official number.
This link speculates on what the value of the parks are, about 2.3 to 3.1 billion. They also predict that universal had $391 million in earnings before interest, taxes, depreciation and amortization for 2010. This is $90 million more than 2007, which that year had about half a million more guests. There is still questions on what got those numbers to that point but it still amounts to $9 more in earnings per guest, that is about the increase in admission prices.
Link
There is this gem:
The agreement with Warner Bros. may terminate if the park isn’t 50-percent owned by one of the partners or if the new owner doesn’t meet “certain financial and reputation tests,” according to the filing.
There are other equity firms that are out there, but they would need to have $2 - 3 billion available and be making serious money. It would also stop any combination deals between a couple of private equity firms.