system
Given the following post, respond as if you're commenting on Reddit:
human
[Pokemon] Why can't I capture fainted Pokemon?
gpt
Capturing a pokémon is no slavery: it is a contract of mutual agreement. When you throw your pokéball at an enfeebled pokémon, this one has to aknowledge that you are worthy of being its new master.

When knocked out, they are not able to make this acknowledgement of their own free will. Therefore, the pokéball will not seal the contract.

This acknowledgement is performed by wireless bond with the pokémon's neural system. That is why even asleep or paralysed pokémons are able to agree to the contract. Aware of their state, they are even more inclined to do so.

The reason why super/hyperballs have a higher success rate is because they are more comfy. As you know, pokémons are stored as data inside the ball. Their biological functions are still simulated, however, that is why they suffer from poison while in the balls. A consequence of this simulation is that they are conscious. Instead of letting them float in a black void where they can think but not sense, the ball generates a small virtual environment, fed to the pokémon's simulated senses.

A small preview of this environment can be seen by the pokémon when the neural bond necessary to the acknowledgement is made. Seeing that they will spend most of their time in a high-quality hyperball virtual landscape can be much more appealing than a meager pokéball virtual-kennel.