It's crazy to see that people just blindly continue to add power to the network regardless of what the price/difficulty are doing. I think part of this is yet another negative of the pre-order disease BTC suffers from. If you ordered from Company XYZ three+ months ago and the box shows up on your doorstep today what are you going to do, not plug it in? But would you order that same piece of hardware for the same price today even if it would be delivered tomorrow? Too often I think the answer to that question is a big fat NO.
Until people truly keep their hands in their pockets and stop financing the development for h/w Co's. two, three quarters away I don't think it will change.
Even Bitmain who had one of the best reps out there have really left a bad taste in people's mouths with the S3, now they want you to wait until September 20th for the next round to ship and pay .66BTC for it TODAY.
It's 0.58
BTC... but I'm just nitpicking there. I agree with your post. Try to tell somebody they can purchase a 600GH/s miner for $4000 and they'll tell you to go pound sand.
Same stuff I have posted elsewhere. According to my calculations, even with a sub 10 cent/kwh electric rate you are not making money at these difficulties if BTC is below 650, 650 being about break even after 3-4 months. And thats assuming (big assumption) that you did not overpay for the hardware (another set of calculations).
PS Forget most online 'profit calculators'. Pie in the sky, not real world earnings by any means. But better than nothing.
You need to stop thinking in terms of fiat here. You need to consider whether or not the miner you purchase will ever make back the BTC it cost to purchase it. If you are going to invest fiat in the hardware, instead of BTC, you need to look at how much BTC that fiat can buy you at the same time you are going to purchase the hardware. For example, if BTC is $100 a coin and your miner costs $3000, you can either buy 30
BTC or the hardware. If you choose the hardware, you need to determine whether or not that hardware will ever get you back the 30
BTC during its useful lifespan. Same applies if the cost of a coin is $10,000. You can buy 0.3
BTC or that miner. If the miner will earn you back more than 0.3
BTC, then pick up the miner.