Strength of the dollar is a major thing to watch when predicting the prices of commodities. I agree if stocks crash it usually means stronger dollar, that would also mean greater pressure on the price of Bitcoin. If it just stays steady then value has risen, its rising with dollar so thats good but there is pressure on any commodity price when a currency is stronger, oil too usually.
Thats not bad because an economy benefits from lower prices. If oil rises too much it starts to effect business cost and profitability/viability. So at the moment I think bitcoin would act like a commodity in that respect. The bigger deal is will dollars always rise on this sell off or fear type move in markets and its likely not going to always be this way.
When gov was threatening not to pay its debt, the price and value of that debt rose which is stupid but its from the same effect which is most trade is settled in dollars (including bitcoin)
If the production cost is higher than market price, then the widget will slowly disappear.
Comes back to supply and demand. The widget might have competitive alternatives but its either a needed item or not, if in demand it'll then rise in price till above production cost