Considering it's the most common, I'd assume so, though of course that's not always the case. The only other methods I can think of are a gear train or connecting the disc directly to the motor, which both risk damaging your gears and your motor on impact. Belts on the other hand, are cheap-ish, easy to replace (you can even 3D print them) and can cover a decent distance, as shown in the picture there. You can see on top, the little idler wheel that acts as a belt tensioner.