> Couldn’t we just “create” at our day jobs and consume at leisure time?
In a perfect world, maybe. But in real life, dayjobs are not particularly efficient at motivating and capturing the creative output of people. Most of them aren't even about creating at all (e.g. a store clerk isn't creating anything except "market value"), and the subset that is usually gives very little creative freedom. Jobs aren't selected to match the person, they're usually selected as least miserable option available and motivated primarily by desire to not starve.
In a perfect world, maybe. But in real life, dayjobs are not particularly efficient at motivating and capturing the creative output of people. Most of them aren't even about creating at all (e.g. a store clerk isn't creating anything except "market value"), and the subset that is usually gives very little creative freedom. Jobs aren't selected to match the person, they're usually selected as least miserable option available and motivated primarily by desire to not starve.