Global Academic Publishing Market By Content Type (Journals, Books & Monographs, Others), By Publishing Model (Subscription-based, Open Access, Hybrid), By End-User (Academic & Research Institutions (Libraries), Individual Researchers & Students, Others), By Subject Area (Science, Technology & Medicine (STM), Others), By Distribution Channel (Direct Sales & Institutional Licenses, Aggregators & Online Platforms), By Regional Analysis, Global Trends and Opportunity, Future Outlook By 2025-2034