If you have the capital, you can make a lot of money. The larger scale you go, the more you make. Thinking of buying a single s7 to mine with at home? Probably not worth it unless your states residential electricity is very low. Investing $10,000 - $20,000 could net you tens of thousands of dollars a year. Rent a warehouse cheap that has 200 or 300 amp lines running to it, pay low cost commercial electricity rates, and you can make a lot of money. Keeping in mind this is all based off of the current price of Bitcoin. I, and many others, predict Bitcoin has no where to go but up, especially since we're in 2016. I know as soon as I have enough saved up, I'll be setting up a mining operation.
I think starting slower and then build up. Starting at home is not a horrible idea depending on electricity price. I think you underestimate costs associated with a "cheap warehouse". You will be spending quite a bit on setup of such a place. There is the electrical, and cooling is two biggest things I can think of. And finding a "cheap warehouse" that allows the modifications you need for such might be hard.
10,000 in this idea would not get you even close to big commercial opperation that's less then 10 S7's and PSU's. And that does not include the initial startup costs. I think someone with ability to mine at their home and make a mining area is ahead by far in the 10,000 - 20,000 dollar area on investment.
