Most tablet owners are upper-middle class. I think WSJ said that over 40% of Ipad owners make over $100k a year. Motorola is going to make a lot of money from its primary customer, Verizon. There's very little reason for tablet makers to make low end tablets because the tablet is still a toy for enthusiasts.
Smartphones are more portable
Laptops can get more work done on the go
Desktops are WAAAAYYY faster and cheaper
Motorola and the other manufacturers are trying to sell more high end tablets because that's where the money is at. Apple is only lowballing cuz they make money on tablet apps.