The US is the largest market for firearms, so the NRA can use the threat of boycotting a manufacturer within the states to prevent the technology gaining traction elsewhere.
Glock, Koch, Taurus, even Czech Zbrojovka all sell to US.
Kalashnikov can’t atm, but also probably doesn’t share the safety concern.
They want the gun to be available to them, and not be under duress to use a fingerprint reader or pin pad or RFID ring to do it.
Responsible gun owners keep guns out of children's hands by locking them up or supervising them, and irresponsible ones aren't going to want to pay extra for smart features.
I think there's a very narrow range of smart features, something like a gun that is unlocked when removed from a holster, but locks up if it is dropped or grabbed, that might be interesting. That makes having the gun taken from an officer less of a threat, which might have an institutional appeal. Give it a 10-hour maintenance mode so that it can be used as a "nightstand gun" while automatically being locked if left idle for longer, and it would basically meet the needs of police both on and off-duty.
A smart gun is like an AWS authenticated motor twisting ballpoint pen. Just no one ever seriously pays for such a thing, and it has not even been seriously made if it ever was actually conceived. Making it a requirement is basically out of question.
Why? If there’s the political will, it is doable. There are Australian gun manufacturers (e.g. Lithgow Arms, owned by Thales)-and if none of them are willing to cooperate, the government can always start their own gun manufacturer. Indeed, Lithgow Arms was founded in 1912 as a government-owned arms manufacturer, and remained in public hands until the Australian federal government sold it to Thales in 2006.
Post-war Commonwealth nations are generally bad at gun designs as well - UK tried once and produced an infantry rifle that will(not could) seriously injure its user if held and fired in left hand. So even if forced, the approved gun will be more of a theoretical product, and the smart gun mandate will just be a less politically viable alternative to total firearms ban.