Mostly everyone likes development and upgrade but adoption of 5G will take some time because it operates above 30 GHz and still has to pass many safety tests. All our current devices and wireless platforms operate under 3 GHz.
As for the currency of self-aware machines, I highly that they they will ever use the one which is understandable by Humans, maybe some form of Quantum currency.
Thank you for your valuable input @bluemist I do agree with your thoughts :)