a guy i knew mined a new privacy coin because its mining difficulty was so low and after a month the coin get listed and its trading at 0.45 per coin while he already mined 8000 pieces, he was so luck and no one saw this coming, I myself was shocked because I stop mining due to too many crappy projects
He should just consider himself very lucky, this chance he has and grabbed happens once in a blue moon or never, its better to mine popular strong well known coins because you won't be at any lose either you decide to sell off or hold for long term