NES to SNES: NES still got tons of first and third party games and the SNES came out of the gate strong.
GB to GBC: Similar to the NES/SNES
GBC to GBA: Similar to the NES/SNES
GBA to DS: DS was touted as a third pillar, but once it was successful it was deemed a clear successor to the GBA. The GBA still got a lot of support until 2006.
Honorable mention: GCN to Wii. The GameCube didn't have much after 2005, but still had some games in 2006 and a small list of multiplats in 2007. Fans still got Twilight Princess on GameCube, which is a good thing.
Lifetime Sales Predictions
Switch: 151 million (was 73, then 96, then 113 million, then 125 million, then 144 million)
PS5: 115 million (was 105 million) Xbox Series S/X: 57 million (was 60 million, then 67 million)
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima
