Shamateurism - when the amateur status of an event is a complete sham. As in calling the Olympics the best of amateur athletics, it isn't and hasn't been for decades. Taken from a Twitter conversation.
Also gives rise to other spin off words like:
Scamateurism - a fake amateur competing.
Shamateurism - a shamefully fake amateur competing (think Mike Tyson wearing a glue on mustache).
Shamanateurism - when a shaman tries to get in on an amateur competition (admittedly a silly one).