It's this one. Gamers have to have it RIGHT NOW. Part of it is just wanting to have the shiny new thing as soon as possible. Sometimes devs have their own hand in it (multiplayer with any kind of progression system harms getting started late), but it's mostly gamers driving it.
With that said, I'll also mention that hardware manufacturers do keep the supply low at the initial release to build hype.
It's this one. Gamers have to have it RIGHT NOW. Part of it is just wanting to have the shiny new thing as soon as possible. Sometimes devs have their own hand in it (multiplayer with any kind of progression system harms getting started late), but it's mostly gamers driving it.
With that said, I'll also mention that hardware manufacturers do keep the supply low at the initial release to build hype.