They confronted eXch with their amateur analysis, so I looked into what it was all about. It is popular these days to do blockchain forensics, which results in the easy placement of negative marks on addresses and coins.
I was following situation with eXch, but I didnt investigate all services involved with investigation.
I guess we have this new experts popping up like mushrooms everywhere.
They literally buy the coins from market makers well above the exchange rate. Some of their own clients (the chain analysis company I mean) sell their coins at a profit in this way. So that business model is not going to get weeded out anytime soon.
That is true, they are getting fresh coins directly from miners or from centralized exchanges.
But they are still accepting all Bitcoins and they earn fees for sending coins back.