Well, I think the problem is HES have to commit to a certain number of copies to manufacture very shortly.
If the preorders go up massively after that once the main stream advertising kicks in, then there may be a shortfall and people hoping to pick up a copy on release day may be disappointed if the actual store didn't order enough copies to accomodate everyone.
Obviously, there will be piracy of the game, but I'm hoping true league fans such as the people here will try to discourage it given that the chance of a sequel is greatly reduced if piracy becomes a big problem.