In this article on Property Observer he discusses whether stronger capital growth is seen in inner Sydney, the middle or outer ring, or the remainder of the city and state.
His results were very conclusive.
Inner Sydney consistently outperforms due to the inherent scarcity of land.
An impressive array of data sets, and it's hard to imagine a more conclusive or clear-cut outcome:
"Centrally located properties in the capital city offer the best return long-term for passive property investors, whether owner occupiers or those buying to let."
The Reserve Bank itself carried out extensive analysis into similar issues and concluded that not only is employment growth, population growth and dwelling price growth focused in the inner areas of capital cities, these trends are actually accelerating rather than reversing, as documented in more detail here.
Not only is the seachange buried for now, the capital city centres are becoming self-sustaining jobs hubs, while regional centres are failing to attract population growth or labour force.
Some of Drozda's excellent data analysis is copied below...