Simplified its a matter of return on investment. Measure your cost versus profit and how long it would take to get a return on your dollars. I've read various article in the last few weeks where businesses are setting up mines out in Montana. It's somewhat irritating the locals, but people are buying up cheap land and setting up mines. Here is a link to one of the articles: https://news.bitcoin.com/montana-is-home-to-new-53-acre-75-million-bitcoin-mining-facility/