I'm not sure I understand how the AGPL allows them to do that. Doesn't the AGPL just require people "releasing" derived works as part of a service to also make their modifications free? I don't really know much about the AGPL other than what I could find on Wikipedia.
Assuming I understand the added requirement of the AGPL, wouldn't RStudio's legal recourse apply only to derived works that didn't release their code?
I wonder if any code written in RStudio gets contaminated with AGPL. I also believe that many companies will just pay the fees out of fear of litigation.
Why would you think anything of the sort? Is everything written in Emacs GPL? Is everything written in Eclipse under the Eclipse license?
Like (almost?) all FLOSS dev tools, there's no connection between how the code is written and the ensuing license. Suggesting such (even by way of a comment) is rather unfair.
Assuming I understand the added requirement of the AGPL, wouldn't RStudio's legal recourse apply only to derived works that didn't release their code?