Because WhatsApp is really good, much better than SMS, and everybody uses it. Meta only bought it after it was already the de facto standard. And to be fair th

Because WhatsApp is really good, much better than SMS, and everybody uses it. Meta only bought it after it was already the de facto standard. And to be fair they are only just starting to ruin it after quite a few years. So I would say the world made a pretty good decision there.