Sydney Amex airport lounge - no NAB card accepted

[palpal]

Just wondering if any thoughts on why NAB is the only big4 bank which does not have a high level Amex card which allows entry into the Sydney Amex airport lounge.
CBA have the diamond awards Amex, ANZ black and Westpack Black all allow entry

why doesn't NAB have one? Any talk about possible changes in the future?

 

[basso]

The cards you mention having access are all 'black' level, or a step up from the platinum level. NAB don't appear to have a card at that level, so that may well be the reason.

 

[TomVexille]

I can only guess that they don't really have an "expensive" enough product. NAB's "premium" cards seem to be in the same bracket as the other banks mid level offerings.

basso ​beat me to it