First I assume the whole deal with laundering money thru the betting system is done for an entirely different reason this story is implying, also I doubt they are rigging those matches they likely have a very different system in place which purpose is to launder the money not generate massive wealth from the bets.
Second I can accept corruption, but the implication here are Gotham PD level of corruption, its insane that some twerp would be able to have the pull implied to pull that stunt off, to be able to do that you'd need to already be massively rich which mean that some ridiculous betting scheme like he is supposed to be wanting to pull would be entirely beneath him. Even if he work for some cartel or larger criminal group they'd have kept him on a leash rather than let him pull stupid stunts that are likely to get him arrested and become a snitch, its obvious to anyone that he is a pathetic little mongrel, they'd know he'd spill his guts at the first sign of pressure from any legitimate authorities. Also corruption is sustainted, not earned for life, unless its based on blackmail, their are limits to what you can get your corrupted officer to do, do you think they'd waste the favors earned by said corruption on Ryker out of all people? Nah.
Third, I don't necessarily expect the story to change but it being unchangeable doesn't mean I don't get to bitch about it. Calling name, alright fair enough, but just like the MC I was pretty pissed at the end seeing the sheer degree of crap the Dev dropped on us with this last chapter so yea I lost my nerves considering how long I have been following this game it create a emotional investment many months in the making, so it should be understandable some insane turn of event to bring some explosive reaction from readers. However while a bunch of people seem to like where this story is heading, the reverse is also true, many people hate how the story is turning out, don't think your opinion is the majority's opinion just because its your opinion.