I can think of a few reasons:<p>1) You can tailor the wireless protocol to exactly your needs, rather than using something general purpose.  That can help things like battery life and latency.<p>2) You don&#x27;t have to work with buggy Bluetooth hardware or drivers that you don&#x27;t make, and your hardware works with any computer with USB.  Bluetooth was not common on PCs for a long time, especially on the desktop.<p>3) You can ship your peripherals pre-paired with the receiver, which means users don&#x27;t need to do any setup besides plugging the receiver in.