Yes, but true...
One guy got lucky (so far) if he realizes his temporary selling opportunity which won't last forever. If he doesn't, he'll go the route of everything cex.io -> losses cumulating.

Cex.io is a money-losing machine but suitable for trading or experimenting a bit around (accepting the losses). GHs prices medium and long-term only know one way : down.
(that's why cex.io only gives you max. 1 month history, otherwise it would be too obvious where price is always headed)