I like the principle being illustrated. I hate, however, the “winner take all” angle.
Perhaps a bequeath of 50% or 60% of the Father’s stock holdings to the older son would help even things out.
The winner take all mentality is a huge source of unnecessarily severe inequity in the world today. Just because one person is not as smart as another does not mean the not-so-smart person should not get something they can manage or do for income generation purposes.
Do not get me wrong. I believe in capitalism and meritocracy. But capitalism has responsibility for figuring out and providing economic opportunities for those whose initial endowments place them at a disadvantage within a capitalist economy. Naturally meritocracy continues to be a factor within context of new economic opportunities created.
Cascades of new opportunities from each stratum of capitalism along with any accumulated social welfare capital ensure capitalism always has a human face.