Clearly it's not being done effectively. I know it's a "political" answer - policy makers know it's the right approach, but they aren't genuinel consulting. I'm unable to right now, but if you're genuinely interested I'll find some pieces written by indigenous people, about the shortcomings of current policies.
With regard to cultural expression, I think you're being glib. Its clearly a sensitive issue, but not an all-or-nothing approach. I don't profess to have the answers (with regard to the degree to which we should allow the administration of traditional law - though this occurs to an extent in the NT). In short though, yep, it is a conundrum, and one that is best addressed by indigenous Australians.
Last, re: Oprah and open doors. Wake up. I have nothing more to say if you really think white privilege isn't a thing because our political compasses are too far out if sync, and I'm not interested in a long debate or flame war. Happy to read whatever you have to say back, but I'll leave it here. Happy brewing.
Edit: apologies for the typos - ******* iPhone!