i really bet that the hash rate will climb like hell in the next year , this is only the beginning.
Add to that the plans from 21 Inc to distribute bitcoin mining chips embedded in consumer and enterprise hardware devices and you have a whole new scenario. http://www.coindesk.com/21-inc-confirms-plans-bitcoin-distribution/
I think even data centers / mining farms will struggle to keep mining, if things continue at this trend.
Electricity is not getting cheaper every year, so this adds to the problem to stay in the mining game in the future with these high hash rates and low BTC price.