Consumer micropayments is one of the most basic possible applications of this technology and that it hasn't been implemented yet is sad. I'm not a fan of the customer experience of Venmo and Paypal and Apple Pay that require me to have a bank account or a credit card. They work in the first world for transfers over a certain minimum but there is really clearly room to innovate still.
Do you see a future where blockchain technology exists but consumers don't use cryptocurrency? I do also. Who is to say that WhatsApps's implementation of Mobilecoin has to use their own proprietary cryptocurrency instead of letting users denominate transfers in local fiat currency?