It is true for all wars, but the (hopefully not) upcoming WW3 will be "man made" and long time coming with the climate change, energy wars and, overall, stupidity on focusing in short-term profit over long-term wellbeing.
Profit-makers look for short-term profits, but the people in the system paying the profits are focused on driving lots and lots, having everything they possibly can as conveniently as possible. We have met the enemy and they is us.