Sorry, I don't believe being able to transfer large amounts of money around without having to trust or be limited by banks or governments is much concern to 'millions'.
There really aren't all that many people that have problems with that, who are that distrustful of existing infrastructure.
There are millions of millionaires in China alone that are very concerned about the future security and mobility of their money. Now consider India, Russia, Iran. This isn’t fiction.
This has been thrown around for years on the BTC scene, and it's just not a killer app. Nor do I believe that such people are willing to use cryptocurrencies for such transfers, in their millions.
And that's before we get on to whether it is moral to facilitate such anyway...
