But you're not flying that itinerary. You're taking two itineraries, breaking them apart, and flying them as two different itineraries that would have priced differently. You're stealing. Feel high and mighty all you want, but you're no different or better than a common thief switching pricetags or jumping a turnstyle.
This is where ExAAeronDL lost me. You are only stealing if you are depriving someone of something that is theirs. Clearly he/she doesn't understand the meaning of the word.
Next, he admits that he works in the airline industry. As we know, it is virtually impossible to convince someone of the truth when his or her livlihood depends on him not understanding it.
Finally, no company or contract can dictate their customer's intent or even their usage of a legally purchased product or service. Could Ford sell you a car if you only agreed to use it for business or personal use? Could they bill you for a different price if you were caught doing otherwise? The notion is absurd.
The examples of nested travel on another airline or another mode of transportation really highlight the traveler's intent aspect of this bogus fraud argument.
I'll take it further. What if you go JFK-AAA-JFK with AAA-LGA-AAA nested? Would that still be considered "fraud" by Delta? Would ExAAeronDL consider it so? (Who probably considers him/herself more catholic than the pope).