I agree with
Everyone has an equal opportunity to mine bitcoins. There is nothing and nobody stopping you. The amount of bitcoins you mine is proportional to the amount of money and effort you put into it, whether you are a poor person with a graphics card or a person with a warehouse full of miners.
and
I find its not fair that some guys can never fuck hot girls ....
so lets make a law that limit how many times a girl can fuck a guy... hence girls will have to fuck many guys if they want active sex lives....
First off, life is always unfair, as shown by the second quote.
Second off, everyone has equal chance. Mining is perfectly linear. If you use 1 terahash at home (I have 4 S3's, perfectly reasonable home setup, plus a bit to give me just over 2 tera) you make 0.0139 BTC/24 hours. You don't pay extra rent for your miner, since it lives at home, and you pay for electricity. You'll be buying miners at resellers cost.
Bump it up, you now have 10 tera. Still doable at home, you may be pushing it. If you're lucky you can find some group buys to get a good deal on miners. 0.139 BTC/24 hours.
100 tera. If you're doing this at home, you better install some more electric panels. There's going to be some renovation costs, maybe you'll make room in the basement or garage. Regardless, rent can still be free, but for how much electricity you're pulling you may pay more for residential rates unless you can work out a deal. Buying this many miners, you can start buying direct from manufacturer, and get a good bulk deal. Solo mining also becomes viable at this scale. 1.39 BTC/24 hours
1000 tera (1 peta). No way can you fit this farm at home, you better rent out a place. Not quite at the scale required to build a factory... You could rent space in a data center. That will now give you a big rent cost, as well as electricity cost, as well as the time spent to maintain it all. At this scale, you could probably make your own warehouse, but then you have the big up front initial costs to get things going. You'll probably need to start pulling in investors. Here, you can make deals with manufacturers to buy miners in bulk. Or, if you really want, you can look into buying chips and making your own miners. ~14 BTC/24 hours.
10 peta. This is where you need to build your own farm. You're going to need a large initial investment, to create a space to hold all your miners. You start getting a few economies of scale, but you also have extra costs. You have your rent to pay, you have electricity (can probably get industrial rates, so it may be a bit cheaper), you have cooling, perhaps even security to watch this place. At least, at this scale, you can buy miners in huge bulk, and getting chips to make your own miners is a very viable option. ~140 btc/24 hours
100 peta (ignoring the fact this is ~1/3 of total network....) You better have a giant factory dedicated to mining. Perhaps even a few around the world. Build them in cold climates, beside power plants. You can buy your electricity straight from the source, probably down at ~$0.03/kwh. Cooling will be huge, rent won't be an issue since these are probably factories you own. Security would be a huge factor here, if not live guards, you'd need some cameras and motion detectors. No manufacturer can keep up with your demand, you better buy your own chips and make your own miners. If you have this much money, you could even start designing your own chips. You'll be making over a thousand bitcoins every day.
Which of these scales is "best"? Who knows. Each one has it's own pros and cons. I'm happy with my home setup. The only thing that matters when buying miners is the dollars/gigahash price, as well as the watts/gigahash for longevity.
