It's not the wage, it's the culture. Cops who get to know what the law& order business is really about sometimes decide to switch teams and many of those become the most successful criminals. They are the extreme rare example and they are driven by greed. Most are regular People from regular Families with regular values and are trying to be the difference between right and wrong but a free meal here, a couple free drinks there, a little something to take home to the Wife or a little tax free pocket cash to look the other way while Guys are gambling or doing something else where there are no "victims" and they're on the road to Hell. Not the Hell of burning lakes of fire, the Hell of no longer being capable of distinguishing where the line is and whether or not they've crossed it and whether or not they can get back. This happens in every culture, only the pay scale changes.
I once heard a Guy state that he "couldn't make it on less than $80K a year" in a conversation with him. I remember thinking "I could 'make it' on what I spend in tips". People perceive need differently.
People keep talking about others using poverty as an "excuse" for committing crimes? Laughable! Poverty is not an "excuse" for committing crime, it's a catalyst. Early in my life I worked at a lot of different jobs, some were hard and dirty, some were not so much but I worked at them to satisfy my financial requirements for food, shelter, clothing, transportation, etc. just like everybody else. I was lucky for two reasons, firstly because there were jobe out there and secondly because there was no work which I felt was beneath me as long as it wasn't illegal, immoral or unethical. I have often looked back to those days of "getting by" and there is no doubt in my mind that if those opportunities hadn't been available that I would have only had two choices. Three really but "Lay down in the street and die" was never a consideration for me. In the absence of work, you can beg or you can steal. I would have chosen the latter, no doubt. This is why I have spent all these decades busting my butt, because I don't want that to be me. Some are not so fortunate and not for lack of trying, there is simply no alternative for them.
The only way possible to change the culture of corruption in government, law enforcement, religion or any other authority based societal infrastructure is from the top, down. Period.