Platform revenue share structures (55% YouTube, 8% TikTok) create structural pressure for creators to diversify into complement revenue streams where platforms take 0-30%

YouTube's 55% creator share on long-form ad revenue is the most favorable split among major platforms (TikTok ~8%, Instagram ~0%). However, YouTube still captures 45% of a $40B+ ad revenue pool, representing $18B+ annually in platform capture. This creates a structural incentive for creators to monetize through complements where platform takes are dramatically lower: fan funding (70% to creators), merchandise (70-100% to creators), and owned IP licensing (100% to creators). The $100B paid to creators over 4 years confirms YouTube as the largest single source of creator wealth globally, but the 45% platform share explains why successful creators systematically build complement revenue streams. The mechanism is not that 55% is unfavorable—it's that the 45% platform share on ads makes every dollar of complement revenue 1.8x more valuable (100% vs 55% retention). This structural pressure drives the content-as-loss-leader attractor state where creators use ad-supported content for audience acquisition but monetize through complements that bypass platform extraction.