If you just installed a new fan in your computer and want to control the lights, another software installation for you that is completely different from what you use to control the lights for the mouse and keyboard, since they’re obviously not made by the same vendor. Before you can use a USB device, you need to install a custom app, that talks to some obscure remote server to confirm… something? No, I do not want to create an account to change my keyboard colors, and neither do I want to give some random piece of software root access to my machine on a pinky promise that it only needs it because it’s easier to write some registry key that way.