What that locked (private) data entails.

What makes this vast private data uniquely valuable is its quality and real-world grounding. This data includes electronic health records, financial transactions, industrial sensor readings, proprietary research data, customer/population databases, supply chain information, and other structured, verified datasets that organizations use for operational decisions and to gain competitive advantages. Unlike web-scraped data, these datasets are continuously validated for accuracy because organizations depend on them, creating natural quality controls that make even a small fraction of this massive pool extraordinarily valuable for specialized AI applications.

Will there be a data exchange where one can buy and sell data, or even commododata markets, where one can hedge/speculate on futures?

Asking for a friend.