[pp.int.general] 3-step usage rights / forced licensing model

[Richard Stallman]

    Personally, iI've never liked 5 years, it's short enough that lawyers
    negotiations (which can already last 1.5-2 years) can just be
    extended, and they get to the point where they say 'no, sorry'.

That is rather cryptic and I am not sure what scenario it is
thinking about.

I usually propose a 10-year duration copyright myself.