If by "mature videos" you are referring to , specialized research exists on its impact:
: Published in ResearchGate , this paper analyzes how mature platforms like YouTube and Netflix monetize content in a concentrated "winner-takes-all" market. Psychological & Developmental Impacts mature streaming videos
If you are looking for academic research and industry analysis regarding the , several recent papers and reports examine how the industry is shifting from rapid growth to a phase of consolidation and optimization. Industry Life Cycle & Market Maturation If by "mature videos" you are referring to