Structurally, the paper appears to make use of the n log(n) rule in the Introduction well before establishing that it is reasonable. You need to make it more obvious that you intend to justify it's use. The justification for the rule itself, done later, is done well.

The comment about Kilkki and Kalervo making a "first step towards modeling..." seems pretentious. :)

Considering the overall content it's a good paper.

One thing that may be worth looking at is the consumer cost of unlimited local phone service based on the number of phones in the service area. Generally, phone company rates for local service do factor in the number of "local" phones that can be called. Unfortunately, other factors like geographical density of phones and infrastructure economies of scale creep in. Anyway, it seems like a real world example of pricing based on perceived network value being offered.

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