It possibly could be, if they were organized as a non-profit that paid them a reasonable salary (which is probably an overambitious goal for most authors). After all, IKEA is a non-profit.
Comparing almost any corporate structure to IKEA is like comparing a children's alphabet book to the tower of babel. IKEA is a non profit owned by for profits partially owned by non-profits owned by dutch companies that license IP from Irish companies (who license it from IoS (IKEA of Sweden) in a small Swedish village called älmhult) owned by non-physical, non-personal entities that are "legal residents in Switzerland" that might or might not be controlled by certain people named Kamprad (in non-exclusive partnerships with other interested parties that might be controlled by companies owned by said dutch companies). And after that we have the whole ROIG, INKGA, etc. structures.
