I think its probably this year 2010.
Ultimately the one factor most people seem happy to ignore is that this gen has already sold to 150 million people.
Even with growth there are only a finite number of people left to sell to.
I reckon the market left for new console sales is approx 70 million.
This has to be divided up between all manufacturers.
If Nintendo stay on course they will take about 33 million of these consumers leaving the HD Twins to fight over the remainder.
Sales are roughly split between the two and with probably 18 months left to run this gen I reckon that this next year will be the start of the decline for all three manufacturers.
Peak year is this year IMHO.







