To add, one other problem that still needs solved in this picture is data federation - and if you solve the network problem and IO limitations fall away, you mi

To add, one other problem that still needs solved in this picture is data federation - and if you solve the network problem and IO limitations fall away, you might actually be able to do crazy things like make joins across distributed systems work, as well as distributed transactions. We already do this with some planet-scale databases, but we are early in this - and it might need to work in the application layer outside of databases too.