Again, for some reason no other form of transit seems to really care. Even if you tell them about it. What other businesses do this (really strange) practice? I can buy the entire Microsoft Office and only use Excel and Microsoft doesn't care.
Take a cruise somewhere, stop along the way and you think to stay there for good? They don't care.
Take a Greyhound bus somewhere and stay in the Arby's too long? They don't care if you want to stay in that random town.
Take a train somewhere, and they certainly won't care where you get off.
Buy a commuter rail pass that will get you to Worchester from Boston, tell the attendant that you're going to Worchester and then get off in Newton... they don't care.
And you know when the airline doesn't care? When you buy the ticket and don't show up at all. They'll happily take your cash, but it seems they don't want to take you halfwhere there.
The concept the airlines are employing is called market segmentation. It's legal and they have the right to do it. The concept you seem to be referencing is some generic measure of product utilization.
The office analogy is wrong. A better one would be the person who tells MS they are a student but uses Excel in their business.
The train analogy is backward, would you intentionally buy a ticket to a more expensive destination if your intention were to get off early?
Take a cruise somewhere, stop along the way and you think to stay there for good? They don't care.
Take a Greyhound bus somewhere and stay in the Arby's too long? They don't care if you want to stay in that random town.
Take a train somewhere, and they certainly won't care where you get off.
Buy a commuter rail pass that will get you to Worchester from Boston, tell the attendant that you're going to Worchester and then get off in Newton... they don't care.
And you know when the airline doesn't care? When you buy the ticket and don't show up at all. They'll happily take your cash, but it seems they don't want to take you halfwhere there.