80+ Million Switches Need to be Sold in 5 Years or it's a Failure

[Soundwave]

To the OP, no system that sells over 50 million in 5 years is a "failure" IMO.

Dreamcast, GameCube, Turbo Grafx 16, Saturn, 3DO, Neo Geo, Sega Nomad, 32X, Sega CD, Wii U ... those are failures.

If Switch "only" sells 65 million in 5 years, that's not a "failure". Mind you I think it's possible to hit 80 mill or more in that time span, though it will require good execution.