Well, first of all an Xbox controller costs around 50 which is not a third of the price. Secondly the Xbox controller has literally less than half the inputs of the steam controller: Xbox controller has a d-pad, 2 joysticks, 2 triggers, 4 face buttons, 2 top buttons, play/pause buttons and the special power button; whereas the Steam controller also has 4 back buttons, 4 capacitive sensors, gyro, 2 trackpads (each of which on its own has a ridiculous amount of possibilities for usage) and 2 special buttons which are kinda irrelevant here. And that’s without mentioning the fact that TMR sticks are ridiculously better than traditional ones of the Xbox controller, or that the dongle works on a dedicated bandwidth instead of Bluetooth for the Xbox controller (because the dongle is sold separately I’m not considering it here, otherwise you need to add 20 to the total and then it’s DEFINITELY not a third of the price) so latency is much better.

Also, I’m not near a keyboard and mouse most of the time when playing, as I usually play on my TV. If I were near a mouse and keyboard I wouldn’t need a controller to begin with.