2024 Indie Author Survey Results: Insights into Self Publishing for Authors - Written Word Media

Markus Dohle, CEO, Penguin Random House, says the top 4 percent of titles drive 60 percent of the profitability. That goes for the rest of them too:

in 2020, only 268 titles sold more than 100,000 copies, and 96 percent of books sold less than 1,000 copies. That’s still the vibe.