PS4 might sell 19-20 million this year, maybe more. But it's probable that it starts to slow down in 2019 beyond. The Switch on the other hand has only started out, and has many years left. There are those who already think Switch will outsell PS4 this year but assuming it doesn't, I myself think this is the last 18+ million selling year for PS4.
Do you think Switch will take the reigns as sales king in 2019 and going forward?