In my region of the US, people with appointments to come to me will sometimes text that they're on the way, which is nice. And plenty of people have websites,

In my region of the US, people with appointments to come to me will sometimes text that they're on the way, which is nice. And plenty of people have websites, but on the whole, most local business interactions start with a phone call, and usually it goes to voicemail or a receptionist, so I have to answer when they call me. Even small time businesses have websites, but they don't do anything usually so it's clear you have to call. Also, sometimes they try to embrace the Internet, and then they get hacked... My primary care doctor had a patient data breach by their accountant. A different practice failed to set permissions propertly on the patient information on their portal, and never said anything to me, but silently scrapped it. A plumber that I had over once had all their client information stolen about six months later and vigorously spammed/phished. Nobody has ever suggested WhatsApp to me. But I gather it's disproportionately popular in some countries.