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There are many variables which go into the selection of technologies and architectures, by geographic zone. The economic issues cannot be divorced from the technologies, nor can they be divorced from the density of demand for service types.
Ferris makes the point in the beginning that NBN Co are building infrastructure to deliver transport for these application demands however, one clearly cannot divorce the functions of the delivery architecture, from the applications themselves. For example: the bandwidth of particular technology types, facilitates delivery speeds necessary to make those applications viable …. and businesses require higher availability/reliability than others, and also need to be be able to forward business critical information as a priority over less important traffic. All of these functions becomes part of the definition of "service" and thus must be catered for in Ferris' network architecture. Make no mistakes about it, the service delivery capabilities of the NBN network, will be critical to the delivery of applications by 'other' providers.
The business decisions made by NBN Co (internally), will impact everyone's expectations, and the efficiency of the organisation itself begins with how people like Ferris view the needs of their customers … and their shareholders.
I see presentations like this, which focus on pure technology options, as leaning towards being a smokescreen, intended to divert attention away from the fundamental decisions on economic and demographic priorities, being made inside NBN Co. These will ultimately, and primarily, determine the success or failure of this venture over any external governmental influences.
Cheers
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