The purpose of the organisations involved with tourism, especially  for young people  is to move people around Australia, which is a vast country, in a cost effective manner. There are so many places to visit. So little time. Young people who visit Australia have the ability to work for one year and if they do work on the land, they can extend their visa for another year. http://www.australia.gov.au/information-and-services/immigration-and-visas/short-term-visas

Clearly people who have the means can visit Australia.