Yes, Switch will peak in 2020, but only because they are about to have the most insane games lineup they have ever had for a single year, on a single console. Mario Maker 2, and Poke'mon will both sell over 10 million copies. Astral Chain, Luigi's Mansion 3, Link's Awakening, Daemon X Machina, and Fire Emblem all have 1 million+ seller potential.
Honestly, I think there will be a serious Switch shortage this holiday season. Sales will overflow into 2020, because of all the people in 2019 that desperately wanted a Switch, but couldn't find one in the wild.







