Started looking around, after reading your post. Usually, when I write in other forums, there is no commercial aspect. With Steemit, perhaps reassessment is necessary. MIT guidelines for using research articles may be found here (perhaps you've seen it already): https://libraries.mit.edu/scholarly/publishing/using-copyrighted-content/. This article, I think answers some of your questions. The information will help me to be more confident as I go forward on Steemit. Thanks for raising the issue.