Paucity of submissions for young playwright competitions and showcases

I don't know if this is true anywhere else but I am involved in the SA Writers Theatre here in Adelaide. This year we ran a competition for young playwrights focused on year 11 and 12 students and had no entries. That's right none. I understand that Urban Myth our local youth theatre group also had problems with their Out of the Boot series this year also for young playwrights and that the State Theatre Companies Young Guns program had some difficulties. Are young people simply not interested in our art form any more or is it the writing that's an issue? Anyone got any thoughts on this?