Where's The Logic?

Courtesy of American Airlines:

1.5 hour flight, Coach -- Beverage service (full can on request) plus mini-bag of snack mix.
3.5 hour flight, Coach -- Beverage service (full can given immediately, with follow-up later in flight), opportunity to purchase "snack pack."

When one spends $550 for the privilege of spending 5 hours in an airborne sardine tin, isn't it reasonable to expect at least one-half ounce of snack mix per flight to be included in the fare? Or should we all begin bringing our own snacks (as my wife says is already the case)? What happens when the person allergic to peanuts (who already caused the airlines to switch to non-denominational cracker-and-pretzel mix) winds up next to the PB&J fiend?