@NotAWeeb it's not exactly a game pass issue, either. i'm sure if game pass didn't exist there would be more sales, but i don't believe it would be THAT much more. most people i know who play games on gamepass are playing games that they wouldn't be paying full price for otherwise. it's kind of like pirating in that sense.
expedition 33 is on game pass and is well above 2m sales at this point.
i kind of think that DOOM has maybe outlived 2016's popularity at this point, but i can't really pinpoint why that is other than people just moving on and wanting to play other stuff. personally, i didn't like eternal at all so there was no reason for me to care about this one.