Originally the 'good guys' in the world of HXH are overwhelmingly strong. For example, Ilumi wanted a license because he needed to go to a country with restricted access and figured the easiest way to do this is by passing the Hunter Exam since Hunters are allowed almost unrestricted access to pretty much everything. Of course, based on what we know from the Ant arc you'd think Ilumi could just instead ride on their family dragon and paratroop straight down to wherever he needed to go and conduct his business rather than going through a fairly complicated process to avoid the equivalent of the border patrol. In fact, in the original setting of HXH, it's a good question why would anyone lead a life of crime when someone like Ilumi would rather go through legal channels than try to sneak past a border, as that implies the odds are ridiculously stacked against anyone living a life of crime.
Likewise Hisoka also said his motivation to become a Hunter is so that he doesn't have to worry about getting into trouble for killing people. Note that he doesn't say getting in trouble with Hunters. So despite being pretty much a raging psychopath with no regard for human life, it obviously bothers Hisoka that say, the police, could be after him if he didn't cover his tracks.
I think originally the world of HXH is meant to be overwhelmingly in favor of 'good' but you can also easily subvert the system in the sense that Hunters obviously look the other way to take care of their own. As long as you didn't directly murder a bunch of babies on national TV, the Hunter's Association is perfectly willing to pretend you're not a bad guy. Shalunark's Hunter license obviously still can connect to the Hunter's web site despite being part of a famous ring of criminals. Hisoka said that the Spider's primary functions are murder, robbery, and philanthropy. I'd assume this is such that members of the Spiders that owns a license can have plausible deniability and claim that they were helping old ladies crossing the street while the rest of the group is on a murderous rampage, and as long as you didn't get caught while someone is looking, you'll be fine. The Spiders do not seem to have significant wealth at the personal level even though we're told that Kuroro sells the stolen goods whenever he loses interest in them and they definitely have stolen all kinds of valuable stuff. I wonder if that's because all the money goes into paying off Hunters and whatever legal authorities out there?
The scene where Razor executed one of his own crew is a microcosm of this system. As long as the inmates acted like what they're paid to do while Razor is looking, Razor doesn't actually care if they're good or bad people. Suppose the fat guy turned out to be super powerful and just instantly killed Killua, and then Gon tried to attack him and he instantly killed Gon too during the events of GI, about all Razor would say is something like 'make sure you clean up that mess'. And if the fat guy killed Gon and everyone else in the first phase of the quest (before they even talked to Razor), again Razor doesn't particularly care that a bunch of innocents just got murdered in cold blood because they obviously weren't strong enough to reach him. As long as you're following the law whenever the gaze of the Hunter's Association is looking at you, it's irrelevant what kind of murderous freak you are during any other time, as long as you didn't get caught. It doesn't even matter if everyone knows it.
