Yes, but how many games truly support 1000 players at the same quality level and fidelity of a AAA FPS? I can't think of any, even Eve: Online has time dilation and starts to chug when the action gets too intense.

What if you could have a 1000 player FPS, and it was networked at the same fidelity of a AAA FPS? It would certainly use more bandwidth, but what if?