Keep in mind that mining profits would go up 10x as well.
ASIC's are not "the goose that laid the golden egg" as some people try to push that view of their effect on mining.
It's a moving target, ultimately profits will come down to the energy cost per coin.
There is nothing stopping BFL or Avalon re-doing their ASIC in TSMC's lower power 20nm fab sometime in the near future, and shifting the mining profit goal post yet again.
Sure, ultimately that'll happen. But we all know that it takes months for difficulty to follow price. And the lag time might be even longer with application-specific hardware, since BTC dropping to zero would effectively render ASIC products useless. With video cards, people could easily recoup most of their investment by reselling their video cards if BTC took a dump, but with ASICs, not so much. It's a riskier investment, ensuring that break-even will remain a short time period until enough people have faith that BTC is here and stable (hah!) for the long term.