But S5 sales broke the back of the SP20, the manufacturing cost of which brought to light a lot of weaknesses in their design philosophy.
It was actually Spondoolies who started the price war, they just wanted to sell them at any cost in order to gain cash for the next gen. That just so happened to be far below what they could possibly have made them for, and above what Bitmain was manufacturing S5s for.
the Ava4.1 would have sold like crazy in North America.
I'm not so sure, its price ceiling was above that of the S5 such that if there was sufficient competition that Bitmain could have squeezed them out. Avalon designs products how they envision they should (think Asian Spodoolies) where as Bitmain has become know for using the absolute 'efficiency' of design. Both are useful and important for a marketplace, both are different.
Hopefully if they do come out with another competitive chip they at least try to make it available to third parties like they did for everyt chip before A3218.
Its highly likely on both counts. Bitmain's [28nm] chip isn't astronomically good and seeing as Bitfury's [16nm] has gone walkies then the bar hasn't been set that high.