I think some places don't give the delivery charge to the driver (I hear Papa John's pockets it, but maybe I heard incorrectly).
I agree in that I think tipping in general needs to change. But I was reading the other day where a bar owner was saying he could pay $X. But with tips, his employees were bringing home more than he was. It's hard for me to say this is wrong. What I find wrong, as you point out, is that everyone is asking for tips now. What I don't know is where to draw the line on who can ask for a tip and who can't.
... and gives you a dirty look when you don't tip for "service".