I'm sure different countries are different. Myanmar is the one I'm familiar with and FB is definitely a monopoly there.
This site gives FB 88.11% currently. Interesting that its trending down slightly:
This site gives FB 88.11% currently. Interesting that its trending down slightly:
The only country I'm aware of where domestic services are dominant is China, and the statcounter data does reflect that. They are conspicuously missing WeChat and QQ, though (which are messaging applications and probably hard to track for a third party), so maybe there's some local service in Myanmar that similarly falls through the cracks.