I think you need to check your maths on that.
Sydney CBD, North Sydney CBD, Chatswood, and Macquarie Business Park are all much closer to SYD than WSI. Even Paramatta CBD is closer to SYD than WSI.
A CBD at WSI is only a theory it doesnt actually exist. Like Avalon they think if they build it people will come, that is far from a certaity.
Perhaps you care to advise what major Australian companies or international companies with an Australian presence have their headquarters at Badgerys's Creek (or right next to WSI)? None that I (or google) seems to be aware of.
A warehouse or factory doesnt a CBD make.
