It might be more that sanctions for violent behaviour are such that people stop themselves before taking it too far and negating their ability to compete in the tournament/series. As you professionalise the sanctions are more black and white rather than in development. Also, with sponsorship, the organisers cannot tolerate bad press and therefore it would be expected that they clamp down on it to save their necks/budgets.
It's rather refreshing that the paintball community does not get all angsty. The amount of shaking of hands and banter that crosses the sport, despite having spent the past few minutes trying to eliminate them as mortal enemies, is something to be appreciated. The ability to apologise, as people did to me at team captain for one of their players' conduct on occassion, meant a lot and instantly got rid of bad feeling that can be a future foot hold of violent behaviour. Too much voilence out and about on a weekend night, don't need it on a Sunday as well.