Why do You think is that only on Chronos? The same "guys" did farm Naia, Zaken, Magmeld last years as well.
What do You think - the adena on gtg, mmork, and other sites cames from somewhere, right ? From where?
I believe they are 5-6 ppl in 24/7 shifts and do supply illegal sites with adena. Seems GMs are a part of the corruption and protect them.