We created a machine learning model using comment data obtained from YouTube Data API. In the future, we plan to market products that use these machine learning models. (Only the text of the comment body is used for learning, and does not include the personal information of the user who wrote the comment, of course.)

I checked YouTube’s guidelines, YouTube’s helps and YouTube API Services – Developer Policies, but could not find an explanation of copyright on YouTube comments.

We only want to know one thing. When we use the comment data, can we use it commercially or not due to copyrights and other rights?

I look forward to hearing from you.
Thank you in advance.