Hmm, I've always wondered why AWS doesn't consider price decrease very much as a factor for determining load factor and samis post above finally makes it makes sence to me, in the current demand model for AWS, it would always result in a price war. I however think that making a more realistic passenger model would make this game the best and about the most realistic possible airline sim.
However, I do think there would be ways to implement such and feature, although I done expect of think it will be implemented I kind of want to share my thoughts.
IRL, lower costs doesn't only sway which airline is chosen, but also the demand itself. For example, Ryanair's extremely low costs make basically anywhere it flies become a tourist destination because it's possible the get there for so cheap. Of course where it goes often does have some baseline tourist attractiveness, but you get I mean. If city based demand wre implemented in AWS there could be some way to generate potential demand at lower and lower prices. At the same time, especially in wealthier regions of the world, there would be a certain percent of the demand which would behave similar to how pax in this game behave now, where they are not sensitive to price but rather prefer higher name value, and in flight services. Of course then another system would have to be made to determine how good your inflight services are, but this is a feature I really want to see.
Additionally more factor could be considered, for example business passengers could be the most sensitive to takeoff times and such and be less bothered about price, as well as travellers in economy who are "visiting family or travelling for business reasons" would also be less sensitive to lower price. Basically, I believe with enough finesse it would be possible to make a demand model for pax that considers price, inflight service, in addition to the factors already considered in AWS. I believe these factors, in addition with city based demand, hopefully with transfers possible would make airwaysim so incredibly fun and complex.