Have the gangs caused rich to lose money in Haiti?

I still don't get how the gangs make money and benefit from he violence. Might be due to what I know. Like in usa gangs fight for territory so they can control the area in terms of selling product. However with Haiti the guns they have from my understanding are very expensive and they are driving away people from the area. I don't know of any gangs that just randomly burn down people homes what the point? I was told the rich is funding them. If so have the rich had their businesses affected by the turmoil? Or have they been richer?