Do you know the minimum price Bitcoin has to sustain, to keep Hashflare running? 
I was always wondering, what is the cost of running those mining factories (farms). I highly compare them to Oil rigs, where the oil is being pumped, and some big corporations paying dividens or sharing profits with the investors. But when the oils barrel price went from 100 USD, to 50 USD in matter of weeks, some of the smaller oil businesses was squeezed out.