I'm really not sure what zombie movies you're referring to, but any zombie movie that goes far enough time-wise after the zombies rise, pretty much always comes to a point where people start using zombies. Movies usually don't because it's hard to fit the long game into 120 minutes, but any series of books or TV show I've come across does exactly that.
I think it's pretty reasonable that early on in a zombie apocalypse, "enterprising individuals" would be just trying to figure out how to stay alive.
I think it's pretty reasonable that early on in a zombie apocalypse, "enterprising individuals" would be just trying to figure out how to stay alive.