The main reason for the success of WeChat in China is because it was created in China. Therefore, it would automatically have a huge appeal in China. Many people don’t realize that apps, devices and websites that have a huge appeal in one country are not popular or could even be unknown in other countries. That is because they were invented and promoted in one country.
Not everyone around the world could benefit from the app or they have their own apps to use. Many people don’t want to have to be educated on an app that does the same thing as the app that they already have unless they are in need of communicating with others in different countries.