Itestwell,
You ask a valid question, and if I had the answer, I'd be CEO of an airline now wouldn't I?
The problem with shrinking to profitability is that your unit costs go up for the most part. I am not saying that capacity shouldn't be adjusted, but it should be done as a secondary measure, not primary.
What really has to change is the pricing model across the board. There is just no place for $99 transcon fares any more. That's my point. These fares used to be subsidized by those paying $1500 and up for coach, and those people just are not there any more. So if the bottom price was adjusted to let's say $299, for argument's sake, the airline becomes less dependent on the $1500 last minute fare.
The answer lies somewhere in the middle--the question is where? Yes you'd have fewer people flying, but the average fare paid by each one still flying would be higher. If I am not mistaken, WN has the highest percentage of customers flying on unrestricted fares, because they are reasonable and add value to the proposition. If I have a choice of paying $580 r/t on US or another legacy airline, with the assumption of an average to poor product in coach, but with all the restrictions and add on fees, or paying the same on WN with it's known product, and no fees or add ons, PLUS fully changeable and unrestricted, what do you think I am going to choose?
I was once told by an airline executive that if he was able to raise the bottom fares in each market by $20, he could lower the top end fare by $300. It's a little simplistic, but I believe such a theory is valid to a degree.
The business demand will come back, although not to the level it was before, and the key is going to be how to offer the most value for a REASONABLE (not lowest) fare. If a DL or UA or US decided to offer unrestricted fares in the mid range of the bucket, they'd probably see an increase in AVERAGE fare per seat.
In order for this to work, ALL the airlines have to independently decide that they can't go on like this and adjust all fares to better reflect their actual costs (not like that would ever happen).
So the answer is complex, but I do believe that done right it can work. The devil, however, is in the details.