Data is being licensed by AI companies, but negotiations are limited to those with the capital [1][2][3]. You write about "imbalance" but ignore that large firms can cut deals while small creators languish.
You seem to believe advancement only happens in the private sector while ignoring academic institutions and publicly funded research. You've dismissed the possibility of public models entirely.
You fail to consider that when you financially disincentivize individual creators from publicly distributing their work, you starve future models resulting in a world were data is licensed only to those who can afford it anyway.
[1] https://openai.com/index/disney-sora-agreement/