I wonder whats the reason why the x4s camera is not compatible with Inspire 1. Any help will be appreciated.

Hi, thank you for bringing your query, here in DJI we do have cameras that are compatible with the inspire 1 and Osmo like x5 or x5r for you to experienced the camera with aircraft or hand-held, however, there will be some hardware limitation as well to our cameras like what you mention the X4S, it means it only be compatible and meant to inspire 2 only. Thank you for your understanding.

in a nutshell, half the camera resides within the I2 as opposed to the X5 X5R X3 Z3 etc being self contained. All the processing is actually done "off camera"