In the article, they are conducting user interviews to figure out demand. They are not creating demand themselves.
"Also, I see your survey results on smartphone usage but I'm not convinced. In my experience poor people have spotty data plans - either no data or very limited, and only use their phone for sms and voice."
WiFi is also pretty prevalent here in the US. Even when I traveled to other countries, WiFi can be found in most cities.
It's possible that your experience may just be yours and other people's experiences are different.