Born, sure but where you play Rugby from say 13-18 is extremely relevant. Brumbies 16s for example got beaten 50/5 by NSW & 60/12 by QLD.
The reality there though is that the overwhelming majority of our players will continue to be schooled in Sydney and Brisbane. At younger ages the tiny population of the ACT is far more relevant.
Their under 16s beat the Rebels and drew with the Force.
At schoolboys level I'd still say the ACT are punching above their weight.