Just imagine if the other parks had a full day's worth of rides for families and a terrific night show. I think it could certainly pull people from the MK.Yes, but I think MK's problem can only be solved by MK. I don't think anybody wants this to happen but Disney could let MK rot and people would still file in by the droves. Therefore, the only way to solve MK's problem is to expand its capacity.
The only way for MK to solve its own problem is to limit ticket sales or stop being the MK.