lol, here's how business works. Supply and Demand. If publishers can secure more money from pre-orders (rather than word of mouth/reviews after the game is released), they will spend more resources on securing pre-orders rather than making a game that will sell through word of mouth. Obviously this decision is made in a financial plan before the game even starts developing. This is why games have been over-hyped in the past few years. They make the game sound better than it is, secure the money, then act surprised when the game isn't what they said it was. Pre-orders are the reason for No Mans Sky, Mass Effect: Andromeda and recent Call of Dutys exist.