Many posts on Bitcoin tanking possibly to double digit figures,but surely the price can't keep falling below what it costs to mine a coin. Many miners must surely be pulling out at these prices?
So you assume miners must have a profit? If price drops to double digits they'll simply have a loss and get out of business, simple as that. Price doesn't depend on them, they depend on the price.
Of course, miners depends on the price. When price fall, miners left and the rest then mine more coins. When price raise, more miners join, and network gets more stable, and all teh rest miners mine less.