Except that is not the way things happened. Epcot has never had an attendance problem of the extent claimed; In fact, attendance was higher during the 1990's, with more of the original attractions still intact, than it was after the millenium with the new Imagination, Test Track, and Mission Space. From the Orlando United forum:
2010: 10,830,000
2009: 10,990,000
2008: 10,935,000
2007: 10,900,000
2006: 10,460,000
2005: 9,900,000
2004: 9,400,000
2003: 8,600,000
2002: 8,300,000
2001: 9,000,000
2000: 10,600,000
1999: 10,100,000
1998: 10,600,000
1997: 11,800,00
1996: 11,200,00
http://www.orlandounited.com/forums/showthread.php/6733-The-Attendance-Problem-at-Epcot
After Epcot debuted in 1982, Walt Disney World as a whole saw a boost of about 10 million persons annually (numbers I found were not broken down separately), an attendance figure reasonably consistent with the numbers a decade later. From the Orlando Sentinel:
Walt Disney World attendance
1986: 23.9 million
1985: 21.6
1984: 21.1
1983: 22.7
1982: 12.6
1981: 13.2
1980: 13.8
1979: 13.8
1978: 14.1
1977: 13.1
1976: 13.1
1975: 12.5
1974: 10.8
1973: 11.6
1972: 10.7
http://articles.orlandosentinel.com...180065_1_walt-disney-magic-kingdom-attendance
A second Sentinel article revealed 25.2 million for 1988, the last year attendance would not have been divided among three or more parks. Even if the Magic Kingdom took took the bigger share of the numbers, Epcot simply was never hurting in popularity the way it is often - and erroneously - portrayed. That's nothing but spin and, indeed, revisionist history.
Of course, that doesn't mean Epcot is now or has ever operated as close to capacity as the Magic Kingdom. Nor does it mean the park can't - and should - be producing higher attendance numbers. Point is, original Epcot and its roster of thought-provoking, grand-scale omnimover attractions were a resounding success. At least until they grew stale, that is, and Disney took the easy, cheaper, lazy solution of substituting thrill rides and dumbed-down experiences within a park which was supposed to represent something very different.