Children are getting the nuclear family environment in current age, so they do not get the exposure to embed the qualities required in team, which implicitly get embedded in joint families.
Children learn things for easy while playing, we build our product in such as way where team need is required and some of team members have to go to achieve the goal and other members support them at various levels.
Team members, who are outside they learn to keep patience in outer levels and support the team, make strategy to ready to solve the upcoming problem by their other team member, as like in army.