"Anyone would do it given the chance" is usually just cope though from thieves, the corrupt, people who abused their power, and narcissists in general just telling on themselves because they can't actually conceive of being altruistic/ethical.
Like sure maybe margins can be a little slim at PC given they're on the smaller side - don't know that for certain, just for the sake of argument to be clear - but come on girl they are on the up and up and actually providing services here, hardly some black company, it doesn't excuse trying to cheat them out of their cut under the table.