You're forgetting salary, admin costs, and office/recording space (if they have one). They have three podcasters on staff.
TLDR: businesses that scale vs those that dont : )
In any case, roel_v is pointing out that revenue isn't a very good metric without more data to evaluate it.
I'd like you to provide an example of a business that doesn't scale :-)
Agree that more data helps. For a headline I'd rather see revenue than margin or profit, as those are more subjective (or net revenue, if you're selling goods).
Unscalable business? Obviously a subjective take but, to me, that means anything where you're charging by the hour (e.g. consulting).
That's a pretty good salary.
Also where did you get the $20K/month/podcaster number from?? You're just making stuff up.
Agreed that's simplistic, but it's a starting point.
Assuming taxes, office overhead, other processing stuff, keeping profit overhead in place, etc, one could still be paying 3 people $5k-$10k/month with room to spare.