Why would they need/want to add the Disclaimer? ("This software is published for academic and non-commercial use only.") By fear of some patent violation? Or do they plan for commercial use (e.g. licensing to Photoshop) and this way they keep the license non-OSS (a.k.a. the "share source" euphemism https://en.wikipedia.org/wiki/Shared_source)? Is it some kind of a well known legalese in academic circles?