why does the 1140.00 flaship iphone not ship with a fast charger?
Why no fast usb 3.1 charger included?
Because that's not what Apple chose to include. As you're not addressing Apple and speculation about Apple policies isn't permitted here, that's probably about the best answer you're going to get. You can, however, submit feedback to Apple here:
why does the 1140.00 flaship iphone not ship with a fast charger?