This happened on the flight to my honeymoon, and my wife took the upgrade.

You should take it and then switch seats with your wife. Happy wife, happy life.

Business tenants know perfectly well that when it comes time to renew a commercial lease and local rents have increased, the renewal rent is going to approximate the current market price.

The landlord doesn't want you to to leave but only to the extent that finding a new tenant costs more than the discount against the current market price they'd have to give you to stay.

> If my wife and I are at the airport, and the gate agent offers me (and only me) an upgrade on the flight, your logic says I should take it since that's strictly better than both of us flying economy.

This has happened many times to me - the answer is to take it and give the upgrade to your traveling companion if you are the one who flies a lot.