Yep. Musk is basing his idea about having an "everything app" on WeChat's success in China, which basically does what he's talking about. The problem is that he doesn't seem to understand that there are cultural differences at play between Chinese users and western users that prevent mass-adoption of a single app to do everything in the west, and that WeChat already exists and isn't popular in the west at all.

Is it a cultural difference, or is it a combination of China being a more restricted market and the first wave of smart phone apps being aimed primarily at the English-speaking world? I am sure some of the apps that Westerners use were not available in China, either because they weren't allowed (e.g. financial services) or were not aimed at that market (e.g. Twitter), at least not initially.

Reminds me of how in high school, my different friend groups used different IM clients, but it was just a fluke of which gained mass appeal first in each community.