Because most of the other seasonal don't pay as well. it feels too much like work to keep running Ferrari seasonal to get the money. Including loading time, to play different seasonal races with a car to get the money it take an average of 20min to get 1 million. Longer if u challenge urself with inferior tyres or car. If I wanna buy miura which is 15 million, it would take 5 hours to buy that car. That's 2 weeks worth of driving for some of us. The ford mkiv, xj113, ferrari p4, chap 2j (b4 OCD), chap 2d, , ford gt40 adds up to 125million which is many many weeks of playing juz to buy a few cars. Despite that it is still a lot better than before. Can't imagine how precious they will be if there's no seasonals.