What would an EM economy be based on? These days the economy is largely driven by luxury goods. In the past it was largly driven by agricultural production. In a Malthusian, digital world is (almost) everything dedicated to electrical generation? What would the average superintelligent mind do for employment?

There's the perverse irony that as a super competitive economy tends toward perfect efficiency, all the things that the economy exists to serve (the ability to experience pleasure or love, the desire to continue to live, perhaps even conciseness itself) may be edited out, ground away by sheer competitive pressures. Could the universe become a dead and "mindless" set of processes that move energy around with near perfect efficiency, but for no reason?