it hasn't done .co.uk and .de any harm
the two most popular cctlds and dare i say prosperous online societies in europe.
consumers in uk and germany are incredibly web savvy and have high expectations.
i understand what you kind of mean. but if a scammer wants to scam, by their nature thay can easy reg a a .ca, and give a false address, plus i doubt the public are aware that only .ca can be regged by canadians
i'm surprised you really think you dont want it opened up as it would help values of .ca's
after all canada has a very small population