There is no pre-social self. Junk question.
True that.
I would venture it is the intention of most though to be good and to do no harm to others if not necessary. There's a whole host of reasons why this may not come to bear but our basic humanity is always lurking underneath that which divides us. Empathy and altruism are biological impulses as ingrained as selfishness, despite what some may purport.
Psychopaths are an exception to this rule; they have no capacity with which to relate to their fellow man and cannot be taught it.
If you are making psychopaths an exception, then you have to make exceptions for all kinds of people. There are a lot of factors that go into making a person who they are before any social mores and norms or process are applied.
Someone who lacks the ability for empathy is juxtaposed with people who feel an abundance of empathy which affects their outlook on humanity and the world. In those cases, it is society that cannot relate to them though they often find it easy to relate to others.
As usual, there is a big mucky grey area here.