This is GTA 6. The game could just be Hello World and it would still be the best selling game ever. They could have started taking preorders earlier and it could have also been the best selling game of last year.

People know how popular the last game was, assume that this one is going to be even more, and feel like they need to be first to play it or they will be left behind. They feel like they need to preorder the game so that it doesn’t sell out, despite the fact that it is a digital download.