What you’re talking about is called a collision avoidance system and it exists and both of these planes have it. It doesn’t alert you to planes on the ground b

What you’re talking about is called a collision avoidance system and it exists and both of these planes have it. It doesn’t alert you to planes on the ground because it would never stop going off. How is the system supposed to know that the pilot approaching the threshold as you land is going to stop? It can’t so it would issue an immediate correction alert and you have to go around.