When Facebook bought WhatsApp I remember calculating the price they paid per user around $20 / year. I don't think you can get every single user across the glo

When Facebook bought WhatsApp I remember calculating the price they paid per user around $20 / year. I don't think you can get every single user across the globe to pay that kind of money. $20 is a lot for some of the users of this tool. Point is, yes they charged for it - but I dont think it was ever a viable part of their business model.