It's not that they can't. They want to make money. When given the choice between making more money and less money, they'll generally choose more. They think mak

It's not that they can't. They want to make money. When given the choice between making more money and less money, they'll generally choose more. They think making a smaller device would make less money. The sales numbers for previous attempts back this up. There's an enormous fixed cost for developing a new model, and it's not worthwhile unless that results in enough additional sales. There's demand, for sure, but how much? They think not enough, and I suspect they know what they're doing here.