We have a population of 100 million.
The world is bigger than just the US.
Indonesia, with a population of 260 million, also overwhelmingly prefers Facebook over Snapchat.
Now you're shifting the goalposts.
But now that I think a little more, maybe we're starting to see a shift of say, tobacco + fast-food etc moving into poorer countries to extract $$ from them. So this mobile-game-social-addiction is the next/current step.
My preference is probably steam chat. The new signal desktop is a dumpster fire.
Most people in my age group simply don't spend very much time in front of a computer. Their phone is their portal to the internet and has generally everything they're looking for.
Slack is much better, but Discord sunk its teeth into the gaming community and it spread.
Pretty interface, easy to use, voice is pretty low latency (although I miss my mumble server), and it uses ~80mb of ram to sit in like 5 groups, which while not fantastic blows "rather open it in chrome" slack out of the water.
New signal desktop instantly uses 200mb and has to "loading messages" for 3s every single startup :(
On the whole, for a product proudly marketing itself as a Slack replacement, it does a terrible job actually providing the same functionality.
Slack's extra features and integrations are nice, too, but I just don't like Discord because it... doesn't even work as advertised.
Instagram is also a behemoth compared to Snapchat. Same with Whatsapp and FBM.
Talked to a friend yesterday who said that he forgot Snapchat even existed, and was installed on his phone, because he hadn't received a snap in a year.
Also, my younger siblings both use Snapchat and Messenger consistently, and are avid users of Facebook (because of meme tagging primarily).
On memes, I think for me and most of my friends something like 90% of facebook use is meme pages.
I think people that use facebook as a meme platform will move to different platforms when something offers pseudonymity with consistent user blocking (ie pseudonym that must be linked to a phone#) and solid group/forum posting + chat features. I think people are vaguely uncomfortable with putting their real name into "Red Commie Memes For Anti-State Teens" type groups and will want to move to pseudonymous or temporal (snap) platforms when they reach feature parity.
Right now facebook memes are growing fast because it is easy for "normie" facebook users to click a couple memes and get sucked into the vortex.
I'm not familiar with this, and the most prevalent Snapchat users among my friends are Android users.
Tencent bought 12% of Snap in Nov of 2017. Likely that has, and will continue to push emerging market efforts by Snap.
Most young people I know use Facebook for groups (local like a school or city), events , and chat. IMO Facebook is shooting all of these feet off with the algorithmic newsfeed and spinning off messenger.
Snap however is used constantly to keep up with peers. Haven't met a single person that uses instagram's stories, even though its usage numbers tell another story.
It really might just be my age/location/privlege bubble, but it consistently baffles me that Facebook keeps growing at such a faster speed than snap.
I asked my younger siblings and none of them nor their friends have facebooks, besides the one in college. They all have snap and insta, and spend ~2X time on snap than insta. Most text communication is snap or SMS.