Well first of all the JP servers are for all of Asia and probably Australia, not 'Japan' what servers did you imagine South Koreans using? or Indian players?
Secondly, we have access the JP servers too, I have a character on one.
Most of what SE are doing is very bad handling, but the one thing that's definitely "all us" is this idea that Japan is getting special treatment. Think about it... how come there's is no South American servers at all? or Australian? or African? Are those user being denied a server altogether?
No, the servers are global. and they work (or don't work as the case may be) globally.
do you realize how silly that sounds?And while we're at it! Lets throw more money at them!
Seriously, no one is gonna log out because of this restriction.