DWELTY SAID
I'm not disagreeing with your views that Disney management wants to see a Disneyland that can offer a similar experience in terms of choice to WDW.
I do,however, think it's an over simplification/error to say Disneyland is more recession proof than WDW. 9/11 had a much greater effect both financially and psychologically on the Eastern coast of the USA ( particularly the North East USA) than it did on the West coast population. The heart of WDW attendences comes from that NorthEast corner ( NY,NJ, Mass, PA,DC etc) therefore it is not suprising that WDW felt the effects of an attack/disaster in the heartland of it's major customer base. Should San Fransisco,for example, suffer a disaster of similar magnitude (manmade or natural like a massive earthquake) I think you'd see Disneyland would suffer a dramatic reduction in it's fortunes with little or no effect on WDW.
IMHO rather than seeing Disneyland as "recession proof" Disney's management may have realised their "investment portfolio" was imbalanced and they were over relient/over invested in Fl and a sensible option is to aim for a more balanced risk exposure. Having a freestanding longterm destination on both coasts means that if anything ever happens to one of the Disney locations there is another that could absorb demand created by any disaster.
It could be that choice to diversify was driven by the events of 9/11, that WDW was a potential alternate target or the close escape from the hurricanes in 2004 but as an investment/business decision it seems a sensible one.