I haven't seen anyone else mention this yet, so maybe I'm completely out to lunch, but it's possible that Periscope had similar issues that PornHub (et al) had

I haven't seen anyone else mention this yet, so maybe I'm completely out to lunch, but it's possible that Periscope had similar issues that PornHub (et al) had to deal with recently but, due to all of the reasons they mentioned in the article, are choosing simply to shut down rather than invest in heavier moderation. If you look at the top streams worldwide on any slow news day, a moderate to high percentage will be OnlyFans models doing self promotion. Periscope bans nudity, so there is a non-zero human cost to moderate this. And with declining numbers in general, the amount of moderation needed goes up relative to the overall userbase. I'm also convinced that there is a Periscope "underground" where people anonymously share and promote truly illegal content via private streams (where the only "private" aspect is the URL). In the past, Periscope may have been able to turn a blind eye because it's not visible through the app, but with increased scrutiny on illegal content, the easiest and cheapest way to deal with it is to shutter the service.