Because Amazon has no reason to risk Twitch profitablity. Twitch is not a profit maker it's a profit guarantee. Twitch doesn't need to compete with Kick or Afreekas. Amazon makes money.

You misunderstood the question

Amazon makes money whether it's their own Twitch or AfreecaTV using their servers.

AWS isn't closing down their Seoul data center, it's just letting AfreecaTV take the risk of streaming while still getting profits from said streaming.

You still don't get it

And you're not helping them by vaguely saying their points have missed the mark.

What I have heard was Afreeca makes use of distributed computing so that resources are shared directly between users rather than everything getting downloaded from their servers. This apparently cuts down on the amount of traffic load.

They were comfortable risking user security by making everyone’s IPs visible to the other viewers (for P2P streaming); Twitch wasn’t.