Heheh, trolling French Canadians. My in-game flag is Canadian, and the people from the province Québec make "QC only" rooms, so I join, having the same flag, and join their "QC rooms only."
Then, right before I leave, I tell them "Oh, btw, I'm not from QC."
These people can have their own language rooms, and their own connection problems, but, I think, that if the person speaks the language (I speak four languages) they should be allowed to stay. So, I've gotten into rooms with "German only" despite my Canadian flag.
Of course, if you're from a really obscure country, and you're still looking for good racing, you could visit the Online Competitions. I, for one, have no problems with any countries.
In my ITCC series, I'm running with people from everywhere; whether it's so far north as Denmark, or as far south as South Africa.
Also, post above, Austria and Australia are completely different countries. Austria is the land in Europe, and Australia is the land of kangaroos, slightly south of the kiwis. There's a difference between yodelling near Switzerland (in the aptly named Swiss Alps), and driving a safari truck through the Australian outback.