Its common sense that if they take random from the street and put effort into leveling your char, they would want to keep that box once you decide to disappear and leave them without buffer at all.
In all parties i played, we didn't start server at all if we didn't had full party made of trusted (1+ server played together) ppl, all items we crafted/dropped was party property and only certain ppl was "lending" it for their needs, even if permanently. If we decided to quit, all did at once and if there was cashout, cash was splitted equally. Thats from official servers pov, didn't wast time on privs after off went f2p, especially now when any priv goes down in few weeks :D