We already know why. The first typewriter manufacturers noted that the prongs would stick together when someone would type too FAST. So they laid out the keys in such a way as to slow typists down.
I always thought the inventor was in a hurry to get to the patent office and trip and dropped the newfangled typewriter and all the keys fell off. He was in a hurry and quickly put them back on then made up a cockamamie story to the patent office why the keys spelled out QWERTY.... !