Post E3 2017 - Predict Nintendo Switch’s lifetime sales

[PAOerfulone]

Somewhere between 80-100 million.
The announcement of a core Pokemon RPG in development for the system should make it very clear that this will be a successor to both Wii U AND 3DS.
With all of their resources and development, both 1st and 3rd party, dedicated to 1 system and 1 system only, this will see quite the increase over the 3DS' lifetime sales.