It's an interesting idea... I know Amazon already offers a cloud GPU computing service for $2.10 an hour each rig comes with 2x Tesla Fermi GPUs but I'm not sure of the hashing power on those. Tests showed it was unprofitable or very little profit, however the tests were done when the exchange rate was far below $5 though.
Thanks for your interest! I messed around on Amazon EC2 for about a week and spent about $30 only to find out that the whole thing was a lost cause (Telsa GPUs, as mentioned earlier, are garbage for mining BTC.)
So question #1: How profitable will this be if the exchange rates fall to say $1.50/btc?
question #2: I'm not sure why you need to start out on a large scale with $28k worth of mining rigs. Why not start the idea by yourself with your own investment capital at 1-2 rigs, then dump the profit from those into buying more rigs each month or however long it would take to mine enough BTC for a new rig (cba to do the math)
#1. If the exchange rate falls, the difficulty will
probably fall, and make it easier to mine the coins. But even if the difficulty stays the same, then mining at 1.5USD/1BTC with 39 rigs will be in the black almost $6000 at the end of each month, after electricity is paid for. I think there would be a crisis mode at that point, and some serious discussion on the future of the business, but I don't think that that kind of drop in price is in the future, especially without a drop in difficulty to accompany it.
#2. The problem I see with this is that it takes a certain amount to beat the difficulty increases and make enough money before them to reinvest and grow. I don't think that having only one or two rigs is enough to do that in the current climate, which is why I'm trying to get enough funds to make a lot of money and not only beat but lead the difficulty increases. I will not be starting with $28k worth of rigs, I don't think anyone expects me to raise all the funds in a few short days. As of this moment, 405 shares have sold, which is enough to buy 3 rigs, so I am going to be withdrawing those funds in the next few days and purchasing the first wave of rigs (which I'm hoping will help my legitimacy) and hopefully more people will buy into this once this occurs.
I don't know enough about bitcoin and the system and how the market works but in my opinion I wouldn't invest money for a future gain in bitcoins. It may be profitable this month or even 2 months from now. But I get the feeling it won't be profitable in the long run that would make it worth spending money on a mining rig. I prefer to just mine with what I got and take the 100% profit instead of spending $2,000 and hoping that 6 months later the bitcoin system will still be the same and the investment pays for itself.
The number of rigs will not remain static, and portions of the profits of the company will be dedicated to growth in order to continue to produce a significant amount of BTC. Investors are paying for the initial equipment, which will produce enough profit to expand and keep the business competitive.
Thanks again for your interest, I hope I answered your questions adequately.