Well I dought bitmain cloud mining service is a competitor of gaw. Bitmain mines with its hardware before selling it to consumers. The recent drop in hashnest power may be attributed to the shipment of s4 by bitmain. But thats just my theory. So basically they mined with hardware that was preordered by others. And now others can get in the game. Bitmain will defiantly be working on the manufacturing the next power efficient miners instead of now just working on s4s.