Back in 2013 the estimated manufacturing costs for the Xbox One controller and DualShock 4 was $15 and $18 respectively, I don't really see how selling a console without a controller would cause a noteworthy price reduction, we're basically talking about a $20 price reduction here unless for some other reason Microsoft would be willing to take an extra big hit on such a SKU. If anything I'd say this is a bad thing because anyone who doesn't already own a XB1 or XSX would basically have to add whatever the price of a new controller is to the price of the console itself.