By tradition, this badge is only applied by the factory to cars that are "special" - Ferrari F1 cars, track cars, track & road cars like the 250 GTOs and the limited series such as 288GTO, F40, F50, Enzo and now Challenge Stradale.
But the marketing department had seen it fit to offer the badge as factory options on all their production cars. So that's why the badge is quite common now.