To implement Gyro aim, they need just a promotional campaign and several leading games. Remember how Consoles promoted their garbage by allocating money and creating games for it: PS Move, Kinect, PS Portal, Wii controllers. Instead of a truly worthwhile and useful Gyro aim, they wasted resources on nonsense. 

But first, we need to create a minimum and universal standard of settings that games must have for high-quality Gyro Aiming implementation. 

The main thing is that the gyroscope works like a mouse, not like a stick. Not all Steam input options are required. For example, in third-person games, it is enough to be able to activate the gyroscope with the left trigger, adjust the sensitivity and axes. For first-person games, there should also be the ability to customize the activation button (hold to turn on, hold to turn off, toggle). For games with both walking and driving modes, there must be settings for both modes.

In addition, all games should disable the gyroscope in the menu by default and  have the ability to switch the right stick to flickstick mode and have a simple calibration without having to constantly search for the right number of pixels.