If you make a bet on a performance and the athlete doesn't show up at all, the bet is voided. Why would you think this is a plausible scenario?

https://helpcentre.sportsbet.com.au/hc/en-us/articles/187169...

https://www.sportsbettingdime.com/guides/how-to/no-contest-b...

Can you show me any time what you're saying has happened?