If the 9th gen consoles launch with BC in 2020, is there any reason to produce 8th gen consoles beyond 2020?

[UltimateGamer1982]

PS4 still has lots of shelf life left. Xbox one, probably not.

PS4 will be selling for years to come with a slimmer model and lower price. Perfect for ppl who want a great console with tons of great games and can’t afford a $400-$500 PS5.