Well you can GW2 basically did just that.

The thing is sqaure wants server control. I'm sure they looked into a aws solution, and said no. Is it I theory possible sure, but they said no so that's pretty much end discussion.

The big issue isn't the queue it's the source code causing various errors. Waiting in line was to be expected aws or not. Even if they could snap magical aws fingers you'd still be likely in a sizeable queue.