Should transport companies follow Delta's move into the oil business?

© Khunaspix Dreamstime.

So Delta has splashed out, and bought an oil refinery, in a move that will be watched closely by all transport companies. Will it be the start of a rash of freight companies entering the oil business? Or will it be a horrible mistake for an airline ? already in one of the most challenging industries ? to enter a second, equally challenging industry. And the carrier has gone into this business at “the high cost point of the curve”, ...