No, all action cameras do not have the same mount. Different brands and models of action cameras will use different mounts and connection systems to attach them to whatever surface or object you want to record. For example, GoPro uses a proprietary mount system with its own range of mounting accessories including chest harnesses, helmet straps, suction cup mounts for vehicles and adhesive flat/curved sticky bases. On the other hand Sony action cameras often feature standard ¼-20 threaded mounting points which allows them to be attached on a variety of tripods as well as universal mounting accessories such as clamping grips and handlebar brackets.