So if WhatsApp had an outage, but you needed to communicate to someone, you wouldn't be able to? Don't you have contacts saved locally, and other message apps available?

In most of Asia, Latin America, Africa, and about half of Europe?

You’d be pretty stuck. I guess SMS might work, but it wouldn’t for most businesses (they use the WhatsApp business functionality, there is no SMS thing backing it).

Most people don’t even use text anymore. China has it’s own Apps, but everyone else uses WhatsApp exclusively at this point.