From Statista:
- Revenue in the eBooks segment amounts to US$13,669m in 2019.
- Revenue is expected to show an annual growth rate (CAGR 2019-2023) of 2.7%, resulting in a market volume of US$15,231m by 2023.
- User penetration is 12.9% in 2019 and is expected to hit 14.5% by 2023.
- The average revenue per user (ARPU) currently amounts to US$14.38.
- In global comparison, most revenue is generated in United States (US$5,487m in 2019).
Link to the rest at Statista