Nobody said everyone who bought Spider-Man bought a PS4 just to play it. But a certain percentage did. Same with other huge exclusives on all platforms.
Obviously, there are a lot if factors. But "system selling" games are a real thing. I find it very odd when people get defensive about the idea that people buy consoles that play the games they want to play.
Is it just the Xbox crowd that realizes it doesn't have the exclusive games lately and so wants to minimize their importance?
Top 3 markets of dedicated gaming console.
Top 20 best-selling games from 2010 through 2019 in the U.S.
Grand Theft Auto V
Call of Duty: Black Ops
Call of Duty: Black Ops II
Call Of Duty: Modern Warfare 3
Call of Duty: Black Ops III
Call Of Duty: Ghosts
Red Dead Redemption II
Call of Duty: WWII
Call of Duty: Black Ops IIII
Minecraft
Call of Duty: Advanced Warfare
Call of Duty: Modern Warfare 2019
Elder Scrolls V: Skyrim
Mario Kart 8
Call of Duty: Infinite Warfare
Battlefield 1
Battlefield 4
Destiny
The Legend of Zelda: Breath of the Wild
Star Wars Battlefront 2015
Top selling games of the decade Japan.
Smash Ultimate
MK8
Pokemon SwSh
Splatoon 2
Pokemon SM
Pokemon BW
Animal Crossing NL
Pokemon XY
MHP3RD
MH4
Top selling game of the decade UK
To give you some perspective, when PS4 was at 60M units sold during 2013-2016, only 1 time ps4 1st party game managed to chart in NPD yearly chart while Switch 1st party games managed to chart 14 times during 2017-2019.
Gamers bought PS4 and XBO to play 3rd party games like COD, FIFA, and GTA.
Gamers bought NSW to play 1st party games like Mario, Zelda, and Pokemon.