Works should not have to be licensed for analysis, and Cory Doctorow very eloquently explains why in this article. I'll quote a small part, but I implore you to read the whole thing.

...counting words and measuring pixels are not activities that you should need permission to perform, with or without a computer, even if the person whose words or pixels you're counting doesn't want you to. You should be able to look as hard as you want at the pixels in Kate Middleton's family photos, or track the rise and fall of the Oxford comma, and you shouldn't need anyone's permission to do so.

This open letter by Katherine Klosek, the director of information policy and federal relations at the Association of Research Libraries, further expands on the pitfalls of this kind of thinking and the implications for broader society. I know it's a lot, but these are wonderfully condensed explanations of the deeper issues at hand.