[CyberRabbi]

You’re free to privately research with this data but commercializing other people’s work using ML is theft.

Edit: commercializing of the derived work is one explicit consideration used by US law in making a fair use determination. That said, even if it weren’t commercialized it may still be infringement and I believe it is.

[Spivak]

Commercializing isn't really the issue, it's still copyright infringement even if you release it for free (i.e. piracy) -- it's unauthorized redistribution (i.e. copying).

[Tenoke]

Even if we accept that (which many wouldnt as most licenses say little about research), the research would never be very useful if you can never make a comparable dataset to use in the real world.

[whimsicalism]

I get that the problem is commercializing, but the theories around copyright that are being deployed here would prevent even free, open-source NLP research from becoming a reality.