[bildung]

There are already quite a few plants (Globalfoundries, Bosch, Infineon, TI, Osram, ...) so the qualified work force is there.

Germany is also pretty heavy on high tech production, so there's a big existing supplier network.

Key suppliers like ASML are nearby (Both the Netherlands and Germany are part of the Schengen Agreement, so logistics-wise almost as open as cross-state transports within the US).

[samus]

Minor nitpick: Schengen does not matter, membership in the customs union does. For shipping, availability and quality of infrastructure is more important.

[rsynnott]

Schengen and in the customs union is still a little better than non-Schengen and in the customs union (eg Ireland), but yeah, the customs union is the main thing.