Games are manipulated so much in local leagues and you can see the reflection in the odds provided by the local bookies as they seem to have fast access to insider information and adjust odds accordingly when they get such info. I've lost bets when obvious favorites ended up disappointing terribly and even when you watch those games, you'll immediately know they were rigged.
But the leagues are still there and still operating, even though it’s pretty obvious they’re rigged. I think it really comes down to our own choices now, because we already know how it works, yet we still bet on it, then complain when things don’t go our way, and that part doesn’t really make sense.
Maybe if you’re a real fan, that reaction is understandable, but if you’re only watching because of betting, then betting clearly comes first. Our interest becomes biased, we complain loudly when we lose, but when we win, we just stay quiet and move on.