You have people you can summon to bring you food, give you rides, buy your groceries. Services that bring you all sorts of entertainment, video games, anything.

> The real generation-proof measure of wealth and power is the number of people who are at your beck and call.

No need to be as rich as Rockefeller (or Warren Buffett): just make enough to qualify for having an AmEx with concierge service.

True, though I'm thinking more along the lines of "build me a railroad between these cities" and "I own this list of politicians".