Correlation does not imply causation. In this case, you're reversing the causation. Difficulty chases profitability (price), not the other way around. Whenever I hear someone say they think the price will go up because the difficulty is going up, it makes me wonder if they also believe that windmills create wind. After all, the faster windmills spin, the faster the wind seems to get

.
Explain please. AFAIK, Difficulty is the collective total of all miners on the Dash network at any given time (a projected 2 year average of this amount, if I understand correctly). If that's the case, Difficulty does not chase profitability, unless you mean that un-profitable D3's will simply be unplugged and collect dust.