Just as "parts are parts" is a fallacy, "fabs are fabs" is as well.
Meaning the name "fab" doesn't make them interchangeable or even equivalent.
None of the locations are particularly desirable either for Intel or for anyone else for that matter. The equipment may be of similar vintage in some cases but not sufficiently "exact" for Intel's approach to manufacturing.
Frankly I can't imagine any tier one semico buying these. Perhaps an EDU might get Malta at scrap value funded by NY taxpayers. Dresden ditto by German govt largess.