Would you mind sharing a resource to learn more about how the UK spies on US citizens?
1. https://discovery.nationalarchives.gov.uk/details/r/C1153691...
But that's a modern example. There are some pretty interesting ones. Here's a fun list of some celebrities that were the targets of a Five Eyes country and were spied on by multiple agencies as a result:
https://en.wikipedia.org/wiki/List_of_people_under_Five_Eyes...
How much does hosting per account in Ireland compare to USA hosting?
Even if a few pennies/cents, at google's scale - that makes business sense and if they can, they will.
Hence the question of actual costs to Google in hosting in say Ireland (staffing, taxes, rates, utility costs, cooling....) compared with another location outside the EU that may very well have cheaper running costs due to many factors.
I hope that clears up why location is a factor now as it related to running costs and if they can save some money, well, they will.
More so if they suddenly free up capacity in a datacenter which has higher costs than some other locations outside the EU. All these details do very much, however small, stack up at the scale of users Google operates with and for the UK, several million is a large chunk of potential savings.
They're facing a dilemma of regulatory uncertainty, and this move resolves this dilemma for them (at least, they seem to believe that).
Anyone who has ever dealt with powerful regulatory agencies will probably agree that this resolution is the right move for the company, a move important enough that eating some bad PR is probably totally worth it.
(The point about powerful regulatory agencies is not that it's hard to stay compliant; it's that the costs, overhead, bureaucracy etc. of demonstrating this compliance is immense, even if you are doing everything 100% right.)