Easy, you sit around the same corner never changing positions. Having an airstrike on your head is your punishment for not thinking outside the box.
You what? You are talking about Turtling not Camping.
Renegade have always been a peek-a-boo game on most maps, you are not supposed to drive around in the open or stand still in the open, you move in and out of cover to avoid taking damage, this is not camping. I think you should go back to the old renegade and play on some servers, perf with unlimited time and tell me everyone rushes. Please. Also the airstike defeats its own purpose, you can just spam it and get unlimited kills because it will generate unlimited credits and got nothing to do about camping.