The top-earning writer on the paid newsletter platform Substack earns more than $500,000 a year from reader subscriptions.

By contrast, 99.99% of writers earn either nothing or very little from their "passion", because approximately nobody has the time and interest to read all of their stuff. It's a terrible career choice that people should be dissuaded from more actively.

I would imagine it's the same or similar for all other "passion gigs".