Again you are not a miner and you shouldn't give advice of how miners should act. I just demonstrated you that you CAN host 6Th/s at home without the need of a datacenter. You CAN'T host 6Th/s at home using rockminer miners.
You are limited to 1 and only 1 sp30 at home where as there are many different ways you could max out your home circuit using rockminers.
Besides 3TH/s today is worth 6TH/s in 3 months.
Secondly only US miners have access to low power costs. All europeans (like myself) pay a premium price for electricity and having the possibility to host the miner in a DC at $0.15/kwh is actually GOOD.
Not all europeans have high electricity costs and I'm sure you know that. Sorry for those of you who do, but mining is simply not for you.(long term at least).
All miners already own mining equipment and are very close to their electricity cap that's why a DC where you pay the same price as you would pay home or maybe less comes very handy.
You could always sell your equipment to someone with lower electricity costs and buy more efficient in stock hardware when you need to upgrade.
And sorry but any miner requiring 200w is close to useless when it comes to spreading the hashrate since the global hashrate just jumped over 100k Th/s so that is pure BS.
6TH is useless compared to a 5PH immersion cooled monster from xbtec.
Anyways close to useless is still not useless. Keep in mind there are a few people who found blocks on their 0.33gh/s BE usb miners.
I think you know that most of the sp30s will end up in datacenters where as a large portion of rockminers will end up in homes.