Streaming services absolutely do have the money to buy up optioning rights on a massive scale, and they're doing it strategically to build libraries and compete with each other - but there's also a feedback loop happening where success stories like *The Witcher* or adaptations of fantasy series proved that book fans will watch, so publishers and agents now actively pitch "adaptable" properties to studios instead of waiting to be discovered. It's become a legitimate revenue stream for authors and publishers, so the incentive structure changed. You're not imagining the shift; it really has accelerated in the last several years as studios realized there's less risk in adapting existing properties with built-in fanbases than in developing original shows from scratch.