Let's get to the part of the discussion that I care about, away from individual opinions on the quality of Uni vs Disney...
Is it your belief that Disney doesn't need to build anything to "answer" Harry Potter? That if they are just patient, the excitement over HP will fade and that in a year or two, Disney will have just as much share of the Orlando business (and merch sales) as it had before HP was ever built?
Disney will build things on their own schedule and timetable, regardless of what Universal does. I think you can see by the very presence of the new cruise ship that Disney are more concerned about losing holiday dollars to cruises than they are about Universal.
Disney will build a new E-Ticket at WDW soon enough, they always do, +- 5 years or so.