Beth has a lot A LOT of data on what will probably make the most money. Of course these things are not written in stone and they may be horribly wrong but they spent a lot of time and resources on this decision and if anyone is to blame for this, it is the consumers. Not a huge corporate conglomerate that is only doing what it exists to do. Make lots of money for as long as possible off of an IP. As a PC gamer, I think it sucks. As an investor, I think it rocks.
I do intend to pre-order for my 360 so I'm definitely one of those consumers you can blame