Things to consider is that much of the endgame population is likely at endgame cities, and much of your lower level stuff will be done through the cross-server Duty Finder option. Later on, you will unlock the "Party Finder" and will be able to do more stuff with people same-server or post "Seeking a free company" requests, etc.

This game does try to emphasize Duty Finder over doing stuff same-server, as does the community. There are, however contents in endgame that are built more for statics and not randoms.