But in exhibition matches it's all about numbers. Numbers of people who watch, numbers of people who buy ticket and other things etc. Revenue.
This is the purpose of exhibition matches and it is geared towards a purpose maybe for giving the realized money for some social responsibilities or to less privileged, so it is not taking seriously for both parties. Betting on such matches even if the promoters decide to put out for bet or the casino bet on it, it is not a serious bet and I can avoid putting money on it but it does specify a winner at the end just for spectators delight.