You can have a homegrown solution but it won't have the content.

Most apps widely used in Korea are homegrown. They have enough content to dominate the market.

Why do you think so? It sounds like this pricing structure applies to any company, local or foreign. Or an I mistaken here?

One of Korea's homegrown Twitch alternatives, AfreecaTV, uses AWS Cloudfront to serve video to users.

Amazon wins either way.

That can't be cheap. How are they making that work, from a financial perspective, when Twitch couldn't?

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.

Korean "homegrown" apps are usually more successful domestically. They don't need help from the government when US-based apps are years late to the game, not well localized, and not competitive feature-wise. The Youtubes and Instagrams that manage to penetrate the market are exceptions rather than the rule.

Korean "homegrown" apps have incredible government support and/or come from one of 3 or 4 BigCo's

You're plainly uninformed. The Korean equivalent of FAANG (네카라쿠배당토) are all completely different corporate entities, and the biggest apps outside of that are mostly startups. Also, what government support? Like specifically? Why on earth would you feel confident enough to make such claims when you clearly have no idea what you're talking about?