Added columns C, D, E to the parent comment to address this - the original chart looked as if its popularity is evenly distributed across nations, but after normalizing by population, it's a lot more clear that it hit a jackpot in Taiwan, and nothing is happening anywhere else.

It's a pattern that you'll notice after a while. US uses Messenger, EU uses WhatsApp, Japan uses LINE, and Korea uses KakaoTalk. Twitter is still like 30% American and 20% Japanese, Facebook is 30% Indian and 20% American, etc. Functional differences between those competing services are trivial, so there shouldn't be reasons any of those apps cannot dominate the world completely in each field and be multilingual and massively multi-national, yet that just don't happen somehow.