28nm will finish the mining game for almost everyone... NO ROI
Decreasing ROI has nothing to do with production process. ROI is decreased through competition. No free market can have the insane ROI that ASIC Bitcoin mining saw 6 months ago.
I mean, when ASICMiner started mining in February at 1.7 TH/s, the difficulty was around 3.3M. Friedcat has said that 1 TH costs less than $10k, so that's a $17k investment. Mining at 1.7 TH at difficulty 3.3M with $15 bitcoins earned $3,915.21 per day. That's ROI in less than
5 days. That's absolutely insane. No free market with profit margins that high will be left alone for long. 28 nm isn't even out yet, and the ROI has decreased by more than an order of magnitude in the past 6 months.
why everybody is jumping into bitcoin ASIC. If cointerra team is the best, they should invent litecoin ASIC and become AM of litecoin.
Litecoin ASICs are much less lucrative for technical reasons (Scrypt is memory-hard)
The other reason companies are jumping on the Litecoin ASIC train is the LTCUSD market depth. It's much more shallow than Bitcoin's. Total USD available on BTC-e is $43,340.28. So a company mining Litecoin and selling them on BTC-e would crash the price to zero if they tried to dump $43k worth of Litecoins on that exchange.
By comparison, selling $43k worth of bitcoins on Mt. Gox would only drop the price from $144 to $143.3.