You have a good point and this does seem to be evolving industry practice. Sony does this in a few of their recent cameras. And Blackmagic just released a new firmware for certain Blackmagic Pocket Cinema Cameras where gyro data is stored in BRAW and then Davinci Resolve has gyro-based stabilisation. It’s not perfect, it’s not magic, it’s not a substitute for a gimbal, and there are some real limitations but that aside the results are shocking. My understanding is that rotations can be very well corrected (as it’s same camera position) but translations are not as successful. Also you typically need to shoot with higher frame rates and there is a significant crop on the resulting image. All that being said I use this frequently and my handheld casual shots are much much nicer now.