Pretty ingenious of him when you think about it
. Steal from people who have a lot of high end things and lots of cash sitting around and knowing that if they do discover the truth, they are not going to press charges. He has stolen hundreds of thousands in jewels and cash and other items and uses it to pay for his lifestyle. Mainly that lifestyle includes drugs, but he sunk a ton of money into some endeavors that didn't pan out and is jealous of the people close to him who have so much more and knows they won't do anything about it. They know who the thief is but are trying to keep it quiet. If it was just him involved it would be easy, but he has been selling it to others for the cash who then sell it again and there are so many people involved that if one of them goes down he will end up going down with the others. There is so much hate right now and so much animosity and there are so many secrets that he has knowledge of and that is their man concern. The other stuff can be replaced or new items bought or more cash earned but it could all come crashing down if they can't reign him in.