Errmmm .................. Irony alert; irony alert; irony alert .............................The Hundred hasn't been a success. It's cost millions and the thinking now is that it will never break even. TV audiences were 20% down this season and attendance stayed the same (there was a projected YOY increase). The trouble is that the Hundred has had a knock-on effect on the T20 Blast and those attendances are down too.
I'd say what's happened in cricket is an object lesson in not messing around too much with a format.