Interesting that AWS didn't chose to place their DC's at the "Node Pole" (http://thenodepole.com) in the northern parts of Sweden where FB have theirs.
Population density of the Nordics https://sv.wikipedia.org/wiki/Norden#/media/File:Norden_pop_...
Even the (very large) Google data centers typically do not employ more than 100 people, that's 30 people over 3 shifts and some overhead.
They don't. There will be a handful of English speaking data center operators, but that's it.
[0] http://digital.di.se/artikel/amazon-oppnar-tre-datacenter-i-...