Why would they not be? Cryptic is also based in America.
I mean I know EVE has its servers in London, but that's because they can't manage a server cluster like that in Iceland and London is the closest place to do it.
And one mustn't forget that regardless of how much the rest of the world hates America at the moment, Star Trek is an American IP, with such nationalistic canon lore as Starfleet Academy being based in San Francisco and so on. It was made here, a product of the same Hollywood that Cool Europeans love to hate. Get over it.