I'm very skeptical of the claim that BFL produced 75% of the network increase in the last month. While ASICMiner's share of the network has dropped, I don't think it has dropped as much as it would have had they not been bringing a substantial amount of hashing power online. 100TH has also been coming online for the last month or so, and I think between the two of them they probably make up the bulk of the hash rate increase. It's a good idea to overshoot these estimates for the sake of calculating profitability, but I suspect that the 6-8x multiplier used for the BFL calculations is probably more like a 3-4x.
In either case, it is very clear that BFL has oversold their units well beyond the point of their own customers being profitable even if they were the only ASIC company out there, which is a very shady and nasty thing to do. I just don't see how they will last another generation of ASIC production given this track record. Many have talked about BFL being a scam of one form or another; while I just think it'd be far too elaborate a scam to actually fab chips and put out these products only to cut and run cashing out on their 28nm vaporware, watching them go under before shipping all of their preorders from Gen 1 seems like a real possibility. The effect for customers who lose their preorder money is the same of course...
You talk as though no other company would have done this. If you simply open your eyes, you'll see that most of the companies operating at this time are doing the same thing. Network hash rate is poised to skyrocket... while I will be shouted down since everyone thinks I am a shill and too ignorant to think for myself, I have alarm bells going off over the companies that claim they will guarantee a 90 day RoI. If the network jumps by a factor of 4-8 over the next 2 months like a lot of people are predicting, that means those companies will have to then increase their product hash rate by that same 4-8 times which will then turn around an put an even bigger strain on the network. Personally, if *I* wanted to scam people, I'd dangle that 'guaranteed RoI' in people's faces and then vanish in the night a month later.
So, shout me down, call me a shill and a sock-puppet and an ignorant fool... time WILL tell.