Those aren't shounen.
Berserk is never going to end
Titan bubble will pop just like gantz and just like soul eater
Toriko is leagues away from being the multimedia phenomenons that bleach and naruto were, though jump is trying their hardest to make it into one.
Naruto ending is probably a bigger blow to jump than one piece ending internationally
Titan is shonen, it runs in a magazine with ''shonen'' in the name. Titan's bubble will pop though, just like Death note and Code geass and bunch of others, its a fad.
I agree, Naruto is the biggest property they have in the west, that ending is a blow to their relevancy.