I also have these intricate dreams about Ethereum, dapps etc. and they all will be possible but when they switch off the main system virtually over night the internet will only run as long as $ paid to electricty co’s to keep the server farms goings. Not talking about the Ethereum nodes, just basic network grids, ISP’s, mobile networks etc.
I’m seriously hoping for a more gradual transition to allow for institutions or at least power grids to keep going but running costs sustained by crypto’s. No network grid — no decentralised blockchains etc.