What's cost of the new construction? Maybe 5-10 million? What's the upfront costs of all the miners? Maybe another 2-3 million? What's the electricity costs to run the machines per month? Maybe a few hundred thousand?

Even at 90K/day, this guy has a gigantic hole to crawl out from under before he starts to sniff a profit. That's assuming that 90K is a constant for the next 6-8 months. What if his production slows down or the market swings down in a day and he loses a few million?

BTC is anything but stable, and any way you look at it, it's a huge risk.