The Epcot of today is living soely on nostalgia and food and beverage receipts. It needs more than one pavilion makeover every 5 years.
The reality is that EPCOT is actually living on two festivals a year, which drive extensive traffic into food and beverage and retail locations. As others have noted here, EPCOT has often been a ghost town this summer. They'll just cut the AC another 2-3 degrees ...