shamrock7seal
It is not always true that brand-new state-of-art aircraft is more efficient than a second-hand one. If you can buy or finance (to get away from operating lease) old aircraft cheap and you have a good control on a maintenance side you can achieve lower costs than with a fresh aircraft. It rather aircraft manufacturers propoganda and general public impression than new aircraft is always better. However it doesn't mean that old aircraft is always better.
On the other hand I would fully agree that many successfull businesses are successful by accident rather than by design.