Not all shops require the girls to perform DD as part of their service. In one shop, it may be compulsory to do but it's not the case in other shops. They have a choice to work at a shop that requires DD to be done or not done. They are not forced to do DD against their will unless they are brought out by the shop and have an agreenent with their overseas agent or Australian contact to work only for that shop that does DD as standard.