Are you suggesting that there's a relation between these failures?
Could be, why not. We don't have official news, so it's worth thinking about. I think some of them are cooperating behind the curtains. Especially those in China. It may not be wrong at all. Friedcat said "We met with two other groups making 65/55nm in China interested in collaboration", also from BTCGARDEN FAQ site "We also had some contacts with them(AM) through either IM tools or in person". ...
BTCGARDEN fail : " our ASIC miner hardware is suffering a very big BUG,here it is"
https://bitcointalksearch.org/topic/m.3448394
In the same time AM Gen2 fail
& In the same time Cointerra *fired their whole R&D team
https://bitcointalksearch.org/topic/m.3495875
I don't follow HashFast but i read somewhere that they have some 2months delays or what ... and no comment about Labcoin, i think they are also from China.
Seems like Bitfury is eating everybody's lunch at this point in time. No doubt it will be an interesting race to follow.