Zone jacking happens all over.
Problem is SE's .. you see all these shouts in WG that usually have at LEAST an hour before they run.
I appreciate that not everyone sits in WG hoping not to see their zone jacked but unfortunately thats how it rolls at the moment.
The issue is a lot of people wanting to do dymanis and not enough zones available.. mainly as a whole because theres a few with dreamworlds access et al.
Beaucedine for example is seen as a "step forward" because the citys are damn lame, and so jump at the chance of doing Ice. (i know i did! i wanted my relic from there.. and thanks to shouts from different shells i have it)
not agreeing with zone jacking like i aint ninja lotting.
But until SE does something about it. its regrettably dog eat dog.