Why is there an increasing amount of team members who work together at first. But as soon as they get most of their build complete. Suddenly do not want to cooperate.

We can literally be a turret away from winning and destroying the enemy nexus. Yet they will scramble to go after a single target and ignore the main objective. Then they keep getting ganked and feeding the team.

What is going on? I'm not even that good at this game but I can prioritize what is more important than a kill.

I've seen a lot more of this lately also unfortunately. I suspect it has to do with experience and elo. People become self absorbed or something. I'm stuck with this also right now.

One thing I've learned to do when I carry a game is once my build is good enough is to give the kills to my teammates since cash becomes less important to a well fed carry, and much more important to cash strapped teammates. Having 3/4 of the kills on 1 champ is questionably effective.

So I usually end games with tons of Assists, and die less since chasing rarely helps.