Whether you see an absolute price or a representation of what the competition is charging, "price management" is a pretty blunt stick, or more accurately, it is akin to playing chess and only seeing your own pieces, if you can't see your prices in relationship to the competition. Managing the revenue per flight is a part of the story, but managing a competive situation is the greater part.
So, yes, I could just about understand what you were saying

I would go so far as to say there is no point going to all the trouble to add this aspect to the game if you can't see your competitors prices, we might as well stick with the current situation.
And all airlines can tell you what other airlines are charging for any seat on any given day for any given flight up to six months before that flight takes place. And predict what they will be charging off into the future.
Some colleagues and I, and we're not specifically in the industry, developed an app, basically simple Web scraper, to bench mark ticket prices on popular business routes and times, including low cost airlines, to predict the best time before a flight to book tickets. We spoke to a company who do the same for airports to help manage slot prices and marketing of slots to airlines, and they did it on virtually all routes into, intra and out of the UK.