I believe the old woodcutter is really making a good thing for all of his seven sons to understand how the world works and for them to be up to the standard in case if he lives the world. They them been taught how to cater and make a living for themselves is very important.
I believe the young man must have been jealous at first. But I love the wisdom the old woodcutter actually made in presently his point of view to him. I can see the story of Joseph in this story.
The younger son might be thinking he must have really been the most unlucky among all of them but it turns out that he became the most successful among them all.