You must be new here.
Pilots & contracts in the USA got ‘scope’ clauses in the ‘60s. By the time pilots in Oz realised that it might be a good idea, management had the firmly-entrenched mindset that ‘scope’ would
NEVER be countenanced here! I’ve been told that Qantas pilots, in the ‘90s, once offered substantial offsets to gain ‘scope’ and were firmly rebuffed at the time.
One could say that we now know why.