If this is such a good deal, why the owners of the machines do not simply use them by themselves? Just trying to understand how it works.
GW sells the mining hardware, they don't own the hardware, they just host the hardware in their facilities and provide low maintenance and power fees due to them being near a hydro power plant.
Take the L3+ miner example. This mining hardware costs $1400 on Bitmain's site (including power supply) but that doesn't include shipping and customs taxes. GW sells it for $1550 final price. I'm from Romania and I'd have to pay more than $1800 to get the L3+ miner delivered to my place. Also, where I live the price per KWh is 3-4X higher than what GW is asking. Makes sense to mine at GW's facilities rather than at my own place.
I found articles about you. Why did you lie before?
We have never authorized and will not authorize Giga Watt as our official hosting facility or our service center in the USA. We have never supported and will not support Giga Watts ICO. We have never authorized and will not authorize Giga Watt to use our BITMAIN trademark in any circumstances. Mr. WU Jihan has never been and will not be a member of Giga Watt team.
https://blog.bitmain.com/en/gigawatt-infringement-announcement/That was a legal misunderstanding back in January 2017. They fixed all legal concerns already. There's no BITMAIN logo anywhere on their site and Jihan is nowhere to be seen in their team description. Of course BITMAIN doesn't want to be represented by a company that aims at decentralizing the mining power. I think it's clear by now that BITMAIN's agenda has been to centralize the Bitcoin mining power ever since they secretely introduced the ASICboost.