I don't understand why no one gets that the price of BTC going up is a good thing. The higher the price of BTC the more we can charge per H/s. The price we can charge will increase proportionally while our costs remain fixed, thus more profit. BTC price increased by a bigger percentage last month than difficulty did. That means we should be able to sell chips for MORE now than we could a month ago (in dollars).
That's been addressed as well. Like I already said, we're entering a more saturated market now - in comparison to last year. The competition is a lot stronger now and has good chips. It'll be a lot harder to re-adjust the price because the competition has to do so, as well. If we try to sell more chips, we may soon be limited by the maximum number of chips we may produce per month. Also, price adjustments often can't reflect the increase in BTC price that fast and customers may not be willing to buy a proportionally more expensive product.
But the most important thing is: If we sell chips today and encounter another bubble or dramatic increase in BTC price, we won't have sold more, only our divs (priced in BTC) will get slashed due to the exchange rate.
This is indeed one of the few cases, where mining makes sense and also offers increased stability.