Many US based software companies either A) have a mostly American user base or B) have a regional distribution setup for their app. So if you are a non-American

Many US based software companies either A) have a mostly American user base or B) have a regional distribution setup for their app. So if you are a non-American in camp A, that is a problem for you. However, remember the goal is to be the least disruptive. If you are a non-American in a region that the server is deployed in, there is probably a night-based take down of the system in your region. If the software company is either A nor B, then the software company need to notify the non-user users that they may experience a disruption.