Where is the sector derived from?

peace.
I asked about the question of the sectors that exist in Israeli public life, whether their entire essence is the mechanism for preservation and restraint in the face of the identity collapse created by the West (and therefore it is a mosaic of ideas that arose, first of all, for reasons that are historical, social, psychological, and due to the inclinations of the heart) or whether it is an essential infrastructure that accompanies the Jewish people in their multiple and perhaps justified divisions. (My question does not discuss the sectoral codes/slang/dress, etc.)
Thank you for your consideration and valuable time.