We always liked McDonald's in the parks.
Sure, we could go over to Crossroads and get some, but it's a little inconvenient when we fly to Orlando and take the magical express to the parks.
ALSO, I'm going to assume the people who say McDonald's isn't classy haven't ate at McDonald's in the last five years. Everyone I've been to has remodeled their restaurants and they look great. Plus, McD's is always improving their menu. They are trying to bring up healthier choices (than currently offered) and keeping the great taste the MILLIONS of customers have come to enjoy and expect.
If anything McDonald's has been improving the quality of their product over the last few years. I can't say that about Walt Disney World's theme parks which raised their prices, cut hours, and haven't really opened anything new that stood out since EE. EDIT: TSM was great, but still, they did raise prices so it didn't really raise the overall value of the Studio's already high admission.
IMHO, it's Disney's loss. Not to mention the loss of an IMPROVING product, the payment for Dinoland's bills, as low as it is, I'm sure, will now be Disney's.