@pepsiman: Forgive my ignorance, but what is the general mood surrounding the economy in Japan currently? Inflation? Stagnation? I know Japan has pulled out of a few automotive deals in Russia due to instabilities here (and probably won't be back for another 2 years until things calm down), but part of me wonders due to the stereotypical risk-averse nature of Japanese business is whether that's them downsizing things on the international front in order to shore up things domestically rather than fear of volatile foreign markets.
I'll preface all of this by saying first that I haven't lived in Japan for a few years. I work for Japanese publishers as a translator, but from my home here in the States, at least for the time being. So I'm not necessarily the most directly in-touch with how some things have been since I left.
My understanding is that Japan still more or less remains in the recession economy it's been stuck in since the 80s bubble burst. There have been attempts in recent years to revitalize the economy in various ways (Google "Abenomics," named after the current prime minister Shinzo Abe for a primer) that, too my understanding, have more or less flopped and basically contributed to the pretty severe devaluing of the yen against a lot of currencies. (I believe for the US dollar, it hovers at around 120 yen for $1.) Knowing that, I would largely agree with your assessment that more than anything, Konami's withdrawal from traditional games is probably spurred in large part to seeing its future within certain successful ventures it has within its own borders, especially with respect to gambling. It's not to say that they don't have international aspirations for other parts of the company (apparently even their gambling sector wants to break into Las Vegas), but they're definitely trending more insular in recent years. I would say that you can't discount traditional Japanese business bullishness altogether, but in Konami's instance when looking at the greater picture, you're probably right that it's not the biggest factor going on here.