I'm currently at McGill University, and using the library proxy to access journals, as one does.
I wanted https://content.iospress.com/articles/semantic-web/sw306
Through the McGill proxy, the Semantic Web Journal throws up a paywall of 27.50 EUR / article, but <shrug>. There are OA versions of the articles.
Then I noticed when I access the same article *without* using the library proxy, it's freely available online.
This seems like a special kind of greed?