every single band, bigger and smaller than PJ passed through Italy since 2006 .. not PJ (and Soundgarden..) .. so i don't blame on local amministration/promoter at all .. Eddie solo tour in 2012 told me a lot .. everything was settled and then .. last minute step back
similar for the other countries you mention i suppose
ps: 2006 5 dates .. all sold out ... Immagine in Cornice seems to be more and more a farewell gift
ppss: here they're much more popular than in 06
In all honesty, I have NO IDEA what these bands/promoters get up to. That said, with the relatively heavy promotion of Lightning Bolt I would be shocked if they didn't do a relatively thorough tour of Europe - which would include at least one gig Italy, if not two.
It seems the band tends to take advantage of the festival circuit as much as possible these days - especially overseas. They aren't playing any of their own gigs in Australia and NZ. I can't help wonder if they'll do (mostly) the same in Europe.
Only Germany, Netherlands, and UK (and Ireland, I guess) seem to be getting their own PJ shows these days.