Not necessarily. Despite your own costs, there is market competition. You might have to keep a price at a certain price point to maintain your presence. In the long run, it won't work but a business does not come and go based upon daily costs.
If watch the Southwest pricing model, I can typically recover 1/3 of the cost of the initial ticket by checking the pricing model as the time to the flight gets nearer. I use those credits on future flights so that is a smart Southwest strategy as well.
I was surprised on my last flight from MCO to PIT where I flew round-trip for $265. More than half of the original fare got recovered as the prices dropped.
