I am no researcher on genealogy or sociology, but I am fascinated by the relationship between the two. How much influence does one have on the other? I think genealogy is underrated, and on the other hand, I think people put too much emphasis on sociology. There are a great variety of characteristics of humans that are inherited, and I can try to paint a picture of how I view this relationship:
You can put make-up on, do your hair, and buy new clothes, but everyone will always recognize you as yourself. There is very little we can do to change how we look on the outside. I feel it is the same on the inside, where most of our characteristics are decided from birth and very little can influence us in shaping our personality and mind. Sadly, too many parents try a little too hard, thinking they can make their baby become what they want them to.
Hence, I don't think it's entirely a coincidence in Peters case. However, I would not underestimate the power of expectations growing up in a wealthy family with high standards. In these cases, some people probably have to go against their own will in searching out their path. Which again, proves the influence of genealogy.