Or maybe they genuinely believe that the content they make today shouldn't be copyrighted for the next 100 years? Lifetime of the author +70 years is a very long time.
Given a binary choice between unemployability and extending patent protection to (even) snippets of code, I am quite confident that 90+% of salaried developers today will chose the latter.
thats not the argument we are discussing - the question is should these protections exist at all. We are talking about denying the artists all protection, only fair to confront developers with the same dialemma.
Whether they are 3 years or 300 is a finer point, and is only worth discussing after nessesity and legitimacy of sich protections is established