Yours and Mine are very understood in our culture. We are pretty good at recognizing the boundaries where Yours stop and Mine begin. We put up fences to boldly declare this is what is Mine and that is what is Yours.
I don’t care if you get Yours but I’m going to get Mine.
We even say things like, “That’s your problem.” Implying that we are somehow absolved from any moral obligation to help out or be involved.