It'd be great if trading competition is based on ROI instead of trading volume because we all know who gonna win so it's kinda a massive waste of time.
But we also know that exchange won't benefit from the trading fee if that were the case.
From a business perspective, more volumes equals to more profits in trading fees
Honestly, I just not interested in trading competition anymore. Fortunately, so many exchange reward trading new coins these days so I prefer that.
I have participated in them too, they suck if you have small volumes, because the rewards are calculated in percentage terms of the trading volume unless if the maximum reward per individual is capped.