I don't think world trade can go back to the age of sail. Just in time deliveries mean just that, otherwise people go hungry. Oil for lubrication not burning instantly paralyses all transportation systems.
I do not dispute the need for change but many aspects of modern living need to change before fossil fuels can be binned. Blaming it all on oil companies is a total cop out. We have developed a society built on cheap fuel for heating, lighting , transport. Before anything else can change society must change. You cannot put the cart before the horse, unless you like travelling backwards.