Unfair? LOL. Videogame and electronics companies aren't run by the United Nations or Amnesty International, dude. They're businesses. Now, whether it's a smart business practice to release a demo or a game in Europe and not release it in the US at the same time, well, that's open to debate. But they have their reasons, and I can assure you, their reasons are based on what they believe is best for their business, and not based on what is fair to you and all the other Veruca Salts of the world who think you're entitled to get exactly what you want, right now. Grow up.
They clearly don't know what is best for their business. Delaying a game while your competitor eats up the market is not what's best for their business. Whatever reasons they have are misguided at best. This is not debatable.