Matthew Britton writes:
Allowing people to "opt out" like this simply isn't
possible.
I think it's only theoretically impossible. As a practical matter, I
don't think it's much of a problem. I believe we could work with the
minority of contributors who believe their content cannot be migrated
in a way that is satisfactory to them.
I imagine most people who have been contributing for
any
length of time share my view that our contributions are
effectively public domain and, regardless of what I, the
Foundation or indeed anyone else does, have been and will
be used in many different ways without the slightest bit of
respect for the GFDL or any other license.
This is in fact what makes it possible, as a practical matter, to
accommodate those contributors who object -- most contributors aren't
personally invested in the specifics of the GFDL.
As Andrew Whitworth writes:
Besides a few GFDL ideologists, most contributors
wouldn't care at all
if we switched licenses, and many would welcome the freedom of a less
restrictive licensing scheme.
Now, I don't disagree with Tim Bartel's point that:
Clauses like '...or later
versions.' are invalid in German jurisdiction and only the rest of the
license applies. [Delphine makes the same point about French law.]
... but I think as a practical matter this is not a problem, because
you'd have to find a copyright-holding Wikipedian in Germany who (a)
doesn't want to relicense, and (b) would prefer to spend money on
litigation rather than simply withdraw his or her contributions (from
Wikipedia, not from any other venue that is using the content
consistent with older GFDL versions) . And even if you could find
someone for whom both (a) and (b) are true, the fact that WMF would
likely withdraw the contributions anyway if litigation were even
hinted at would go a long way towards building a legal defense for WMF
in such a case.
--Mike