Are families socialist, or clannish and nepotistic? I don't think you can run a country like a family, especially a multicultural transcontinental one.
I think family loyalty is deep rooted, where as socialism is something people debate (maybe more a mix of neocortex I.e. planning and lower emotions coming from morality and political identification)
No matter what their politics most people will look out for their family especially their kids.
I would say there is a high socialist elements - a parent doesn't have to sacrifice their economic comfort or even time just to give their kids a better education or better lifestyle. But many do so.