Agree, I think the practice is also very clear from the overall strategy of AI-companies and their ToS:

Scale with subsidized pricing as fast as possible to gain more user-data for training --> Own the better model --> scale pricing.

Scanning social media (e.g. Twitter, Reddit) posts only give a glimpse into the thought-process, chat logs on-scale give you the actual process in machine-readable format.

There's a reason why Google considers the Emails of Spirit Airlines to be worth millions of dollars [0], they give insights into a process, not just into the results...

[0] https://www.axios.com/2026/08/17/google-spirit-airlines-bank...