The genre only came about due to economic and social changes in post-WW2 American and Britain. The stereotypes and demographic associated with teenagers didn't exist before this as the transition from childhood into adulthood was quicker and older teens used to take on the identity of their parents in the way they looked and dressed. Only kids from wealth families would go to university and everyone else began working, then got married and would start a family. Due to the immediate post-war baby boom and political stability, more teens were going to be around and more of them could afford to go to university. Consequently, more teenagers had leisure time, disposable income, and cars, which awarded them with more independence and space that teens before this era didn't have. Between 1952 to 1958, the teen market grew by 2.8 million and the media industry took this opportunity to grow their teen demographic
