I have an opinion and I'm curious how folks feel about it:
It is not selfish to use public domain and CC non-share-alike in commercial projects.
Making derivative works is still _making works_. You have every right, and should feel perfectly comfortable with not using works which require you to openly-license your work.
However, it is _scummy_ for a _large company_ to do this, companies which have established vehicles to monetize their work.
I'm aware that this is cognitive dissonance.
And also, making works which you DO put out there as share-alike is not inherently bad or selfish or anything.
Anyone who publishes work and simply asks that it's only used to make other share-alike works is still an asset to our society and culture. You're wonderful.
@eltheanine yeah, I doubt this counts as a hot take, but it came up in a conversation at my local café yesterday, and I figured anyone who follows me on here would find it a good discussion topic.
The person I was talking to was basically counting it as cultural erasure.
It was in the context of LLM-based AI products, but we were talking about the general case, too.