From its roots as workingclothes for farmers and servants in south Germany and Austria, trachten has evolved over the years to become leisure wear at festivals and celebrations.
In the cities of the rich world no woman is expected to wear a garment until it is worn out. (Men, unaccountably, tend to hold on to their clothes for years, but the industry is working on the problem.) The clothes industry would be in a pickle without a constant supply of clients dissatisfied with the contents of their wardrobes.