I am looking for some rough estimates of the ratio of capacity (equipment) pricing declines versus average increase in end user capacity. For instance, say end user average capcity usage increases 50% over 3 years, would the ISP's costs also increase by 50% ? Or would increased efficency of equipment result in a 50% decrease in capacity costs yielding roughly the same total cost to the service provider ? So I am looking are some sort of ratio of gross costs increases/decreases relative to end user usage increase in usage over time. Context: Wholesale services in Canada are priced linearly and there is a process trying to convince the CRTC to review them ASAP. So if average use grows from 1mbps during peak to 1.2mbps, we are looking at 20% increase in costs in a linear pricing scheme. But if this happens over a period where there have been improvements in equipment/efficiency, then one would think the increase in costs would be less than 20%. So I am looking for any and all information that can help convince the regulator that current linear increase is not right and needs a review. any help appreciated.