What surprises me is that while WhatsApp has become an "everything" app in many parts of the world, much like WeChat in China, it has not done so in the US. In fact, I don't know anyone in the US who uses WhatsApp "internally" (the only times I use it is to communicate with people outside the US). The description of WhatsApp here is exactly what Elon wanted X to become (which clearly didn't and almost certainly now w…
Payments. The sticky part of "everything" app is the payments platform. With a payments platform you have a internal "funded" ecosystem. Anybody who can not take payments from the "everything" app has a incentive to get inside so they can get paid. In many countries, the "everything" app contains, what in the US would be called, a bank. This is basically illegal in the USA. US Banks are extremely stringently regulate…
It succeeded because it was around at the time where SMS messages where expensive, but smart phones where exploding in popularity.