horrible analogies.

Frontier customer is searching for a cost effective solution to a problem. Unlikely will spend extra or needs anything beyond the solution (Point A to Point B transport). MCO to LAS for leisure.

Delta/United customer is searching for the same thing but indeed will spend extra if deemed justified in their eyes or beneficial for longer distance future planning (MCO to LAS and use FF points for family vacation plans later in year, etc). MCO to LAS, extensive family luggage, needs reliability of numerous flights a day. Spending extra on Delta ticket = discounted rental car bundle. Etc. Or different solution needed, aka MCO to Tokyo