Believe it or not, it is actually impossible to flood a route, no matter how many players are flying that route and no matter how many flights are set for that route - which ultimately means no player can force another player off of a route.
Also, what others charge for flying a route has absolutely no bearing on what you can charge for that route. If everyone else reduces their prices to $1 you can arrange things so that those $1 ticket prices everyone else charges have absolutely no bearing,influence or impact on what your ticket price is for the same route.
Even more, all possible routes within the same country (even routes having zero annual passengers) can be made to do the same thing as outlined above.
That is, IF YOU KNOW what you are doing, and why, and when.
Just to bend your minds a little further, I'm going to go all "MATRIX-like" on you and tell you that "There IS no competition!"
So, I ask - do you take the Blue Pill and go back to your own pre-conceived way of playing this game, comfortable in your notion that this game should be played as realistically as possible;
do you take the Red Pill and allow me to show you just how deep the rabbit-hole goes?