The DOJ has every right to rule on how American companies behave, subject to the courts. This case is about which courts are applicable.
Forget about "data" for a moment, let's talk about something physical. Consider, e.g., ExxonMobil's operations in, say, Australia. Those are governed firmly by Australian law: no US court can order the company to drill here or move something there, in violation of Australian law.
This remains true even if all the actual humans involved are American, and all the equipment was manufactured in America and transported on American ships (none of which conditions are likely to be true, but it makes no difference).
Biting the hand that feeds IT
