> There are very clear limits on what a court will enforce in licenses (and contracts), and owning the output of a program, and barring exceptional circumstance

> There are very clear limits on what a court will enforce in licenses (and contracts), and owning the output of a program, and barring exceptional circumstance, courts will not enforce them: It seems to me that the cases in the article you linked involved the author of the program arguing that their copyright automatically extended to the output without any extra contractual provisions concerning copyright assignment, so I don't think they can be used as precedent regarding the enforceability of such clauses.