I would say if it's just a single console type gen, 6 years max, even with a $499 launch price. If it's a mid console type gen, 8 years would be best. I don't think that would have worked this gen however, since the Jaguar CPU's were just too weak. 7 years will really be pushing it. Next gen with Ryzen, I could totally see a 2020 PS5, 2024 Pro, and 2028 PS6.
PS1 - ! - We must build a console that can alert our enemies.
PS2 - @- We must build a console that offers online living room gaming.
PS3 - #- We must build a console that’s powerful, social, costs and does everything.
PS4 - $- We must build a console that’s affordable, charges for services, and pumps out exclusives.
PRO -%-We must build a console that's VR ready, checkerboard upscales, and sells but a fraction of the money printer.
PS5 - ^ -We must build a console that’s a generational cross product, with RT lighting, and price hiking.
PRO -&- We must build a console that Super Res upscales and continues the cost increases.
