Japan has introduced fiscal stimulus five times in the past seven or eight years and each time it's been a failure and that's not a surprise. Fiscal stimulus is not stimulating in and of itself.
Italy may well be the main problem. It has benefited most from the euro by having been able to get the euro interest rate instead of what otherwise would have been its own. That would be much higher because Italy has been accumulating so much debt. In the past, Italy has inflated away its debt. The virtue of the euro is that Italy can't do it alone. A tight ECB policy wouldn't permit that to happen again.
What you have as a result of past policies is that German entrepreneurs go outside of Germany for many of their activities. They are investing abroad instead of at home because there isn't the openness, fluidity and opportunity they find outside their borders.
