Game Update

Ok so i feel i am better then the elo i am in and most times i win a lane hard i push get 2 inhibs solo and have 400cs so i hit full build as i do that my team does nothing then when i die they all run around and die to so the other team hits full build like me then that makes me not be able to carry as much so why cant we make the items continue to scale past where they are at right now like in the 6k range why should i win hard but due to my team cant end caz they wont group and die lots?? i hate ending a game i was winning then lose with 5-10k sitting there i think stronger scaling items would be great. or maybe items that lvled up so if u got ur ie first it would start to scale up to give u a edge something like that anyways