Without speaking to the ethics of the situation in either direction, I will say as a student that the vast majority of my time spent programming is on open source, or random personal projects. Assignments are maybe 10% of the time maximum. At least among my circle of friends (a fairly enthusiastic crowd, not a perfect representation of the major) this seems to be typical.
YES this exactly. I'd gladly pay, but because my account is under the student developer pack it won't give me the option. Let's hope they get this fixed soon.