Open Access Market Sizing Update 2022, Oct 25, 3pm (BST) | Delta Think

"We estimate that the OA market grew to around $1.6bn in 2021.

• The 32% increase over 2020 is significantly larger than the growth in the underlying scholarly journals market, which is typically low to mid-single digit. It is larger than expected for the OA market.
• Growth in OA will remain above that of the underlying scholarly journals market, although we anticipate both will slow in 2022 before resume underlying trends. The open access market is on target to be over $2bn in 2024.
• Around 45% of all scholarly articles were published as paid-for open access in 2021, accounting for just under 15% of the total journal publishing market value. (Note that this year, we have changed our method of calculating total market, which will mean our figures for market share will increase by one or two percentage points).
• We anticipate a 2021-2024 CAGR of 13% in OA output and 12% in OA market value. ..."