Services like Artifact, which show news articles from a variety of sources do not mesh well with either of these larger markets. An older market who prefers their singular news source does not want to read news from anyone they don't trust. And the younger market aren't fans of specifically just reading news. It's usually peppered in with posts from friends, or it's trending and has a large discussion on Twitter/X.
So the market becomes limited to people who get their news from various sources and prefer absorbing their news at specific times and in specific ways. In the American market, I believe it's just too small of a market to become profitable.
They made the unconventional choice of using Clojure: https://github.com/plumatic
Chinese users grew up on everything being app content, traditional media is just an input like any other that agglomerators consume and then present algorithmically to users, everything is completely mixed between user generated content and news stories and there's no particular notion of news or journalism as a distinct entity.
You can aggregate as much shit as you want but unless you’re using it to manufacture fertilizer it’s still just shit, and that’s before even going into the content of what passes as news nowadays.