That's interesting. I was going to ask a counter-point, such as WeChat or WhatsApp being more popular. Which I guess is the case in personal connections, but

That's interesting. I was going to ask a counter-point, such as WeChat or WhatsApp being more popular. Which I guess is the case in personal connections, but as SMS is, like email, federated, it makes sense for companies knowing messages get delivered (and is probably a lot more reliable than email in deliverability status reports), and there is a huge demand for that, not least regulatory and compliance (and regular customer service).