You know guys I've been thinking this too.
I think there are a lot of general stereotypes about domain investments.
Right now it's really hard to get a good generic dot com for cheap.
Perhaps right now international sales aren't topping the DNJournal charts but there are other good markets to invest in for future investments.
I'm into Japanese IDNs but it's not just about IDNs either.
Spanish domains are hot, you even have choices of extensions. You can get them in ASCII or IDN.
There are many who are satisfied with their investments in dot coms, but truth is many people keep spending & spending on really bad domains.
My point is many here are from different backgrounds & should start to look at different markets. It could be IDNs, it could be global extensions, co.uk, .fr, .cn, jp, .es, even .ca
One of the things to look at if you go look at the international market is:
How many new sites in the location are using the countries extensions versus dot coms, nets, etc.
Everything changes, Media: NewsPapers -->Radio --->TV ----->Internet
Think about it.