KC,
I will reiterate again that the US DOT said in its report on the airline industry released in Sept that there is no evidence that bankrupt carriers are pricing their products lower than than non-bankrupt carriers. You can certainly find instances here and there but that does not make a complete trend. Given that UA is the dominant carrier in DEN, it is very likely that they have some flights in every market that have more capacity than needed and thus low fares will be offered. Part of that is the result of the hub and spoke system and the inefficiencies that it creates. LCCs typically have far less capacity in markets where legacies dominate and thus skim off the best revenue.
Fares actually have been successfully raised a number of times this year; the increases in RASM that every airline is reporting is evidence that real fares are going up. Again, there are hefty discounts but by and large fares are going up - as they should. And they likely will continue to go up given only WN is well hedged into 2006 and they simply are not big enough to force fares down throughout the country. However, fares cannot be raised much without pulling down capacity - something that is almost impossible for a non-bankrupt airline to do and only slightly possible for bankrupt airlines. We have seen over and over that lessors would rather take a haircut on their leases w/ bankrupt airlines than let them dump the aircraft. Given that the legacies have hundreds of 10 plus year old aircraft which will not be snapped up by anyone, the leases will come down dramatically but the planes will remain in service. DL's estimate of cutting lease rates by $400M or more per year is indication that many current leases are too high.
The only real solution to making legacy airlines profitable is to cut costs pretty close to LCC levels, fly as much where LCCs don't, and then remove as much capacity as can be done in order to push fares up (primarily connecting capacity for the legacies) - all at the same time realizing that there is alot of capacity coming online from the LCCs and the legacies will have to vigorously compete w/ them or be relegated to history's junk pile.