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Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Why didn't ownership of the Elder Wand transfer to Voldemort after he killed Harry?

This seems like a bit of a plot hole to me and has been bothering me for the last while.

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Let's take a look first at those who have owned the wand and how they lost it.

- **Antioch Peverall:** Either acquired the wand from death or created it. Had his throat slit in his sleep, transferring ownership of the wand.
- **Emeric the Evil:** Was slaughtered in a duel by Egbert the Egregious, transferring the wand.
- **Egbert the Egregious:** Unknown.
- **Godelot:** Died after being locked in a cellar by his son, Hereward, transferring the wand.
- **Hereward:** Unknown.
- **Barnabas Deverill** Was murdered by Loxias, transferring the wand.
- **Loxias:** Was killed by either Arcus or Livius, transferring the wand.
- **Arcus/Livius:** Unknown.
- **Mykew Gregorovitch:** Was stunned by Gellert Grindelwald, transferring the wand.
- **Gellert Grindelwald:** Was defeated in a duel by Albus Dumbledore, transferring the wand.
- **Albus Dumbledore:** Was disarmed by Draco Malfoy, transferring the wand.
- **Draco Malfoy:** Was disarmed of another wand by Harry Potter, transferring the wand.

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So it seems that the wand can be transferred via non-magical killings (Peverall), killing curses/death by magic (Emeric, Barnabas, Loxias), indirect killings (Godelot), disarming (Dumbledore), stunning (Gregorovitch), and by disarming someone of another wand (Malfoy).

So why would Voldemort casting the killing curse, and killing/defeating Harry, not transfer ownership of the wand to him?
gpt
You've got the first bit already: The Elder Wand doesn't change allegiances when its owner is killed, its allegiance is to power; Whoever overpowers the master gets the wand. Harry walked into the forest and let Voldemort kill him. There was no struggle, no magical confrontation. And even more importantly, Harry wanted Voldemort to kill him. This is also what triggered protection over all those still fighting at Hogwarts. Voldemort was so obsessed with death, he failed to see the kinds of magic against which death is meaningless.

Harry actually got this plan from Dumbledore. Dumbledore wanted Snape to be the one to kill him, to die at the hand of his most loyal man, the only one who would obey the order to take Dumbledore's life. Dumbledore theorized that if his plan worked, the wand's power would "die" with him, its loyalty to a dead master meaning it could never be won again. Of course, Malfoy sidestepped Dumbledore's plan at the last minute. The best laid plans of wizards and nifflers, and all that.