There will be multiple situations in adult life where a resource or a position can't be shared (e.g. winning a competition, love interest, getting promoted, etc

There will be multiple situations in adult life where a resource or a position can't be shared (e.g. winning a competition, love interest, getting promoted, etc.) and physical and social competition is the only way to acquire those. These teachers are preparing these children for a fantasy world of their own that does not exist.