The new architecture is scalable, no? What if they go the iPhone/iPad route and release a slightly better one every year?
Ummm, no, just no.
iPhones sell insanely better at way higher margins than game consoles do, I doubt the industry could support yearly iterations like that.
ALL of the hell no!! That defies the very purpose behind consoles. Get a PC for that. Why would you want to spend several hundreds of dollars every year?!
Besides, if Sony & Microsoft were to upgrade the architectures, specs, etc. of their next gen consoles each year, then we won't be able to play our older PS4/Xbox One games that we bought for the systems on the newer models, nor play any new PS4/Xbox One games on the older models.
It would be suicide for either company to do so; that's splitting up your userbases.