Wechat has an inherent advantage that in order to chat in China or too chat with anyone living in China, you must use wechat. No American or European chatting

Wechat has an inherent advantage that in order to chat in China or too chat with anyone living in China, you must use wechat. No American or European chatting app has this same benefit. And since chatting apps and social media in general tends to gravitate to the service with the most users, this puts wechat in a great position. Why use wechat to message your friend in China and WhatsApp to message the rest of the world, when you can just use wechat for both?