A world where worldbuilding is the primary source of income

Let's imagine a world where everyone gets enough social welfare to live comfortably, and where work is just for entertainment, because it's not the main source of income anymore, so it can pay little.<br><br>In such a world, if worldbuilding is legal (which it is today), why wouldn't you be a worldbuilder?<br><br>I imagine this world would be full of people who just develop fictional worlds all day, creating a big virtual "market" of worlds, where people would sell their worlds or (more likely) share them for free.<br><br>Wouldn't that be something?