It's an open secret that Adobe and Microsoft had a model of non-enforcing piracy for private use, and I think it's pretty good. It's totally fair to charge business licenses, but in the area of education and science, limiting access is holding back the progress of the entire human race.
Greed is trying to capture all the value you create. Don't do it. Let others have some, and then they'll happily let you have some of theirs.