I doubt Whatsapp will take over US too, the network effect is probably too strong for that to happen. For the same reason FB Messenger seems to still dominate s

I doubt Whatsapp will take over US too, the network effect is probably too strong for that to happen. For the same reason FB Messenger seems to still dominate some markets and Telegram others, even if theoretically Whatsapp could take both over because neighbouring countries are using them.