You gave them money to play on the 20th. The EGA was just the possibility of an added bonus.
I remember a certain other extremely popular MMO that did a one-day launch. Once those floodgates opened: disaster all around. Dying servers, rollbacks, crowdedness, uneven population, etc.
This staggering is a blessing, trust me. I'm sorry you don't see it that way, but perhaps you should try looking at it from a different point of view.