Perhaps .ca opening up could be good if canadian companies stick with it and others in cali adopt it?
Have your cake and eat it too scenarios rarely, if ever, work.
If .CA opened up to the world, there would be a short and very limited jump in investor activity, followed by a long-term trip into the "generic ccTLD junkpile" as investors quickly moved onto other 'pump n dump' opportunities and Canadian companies were no longer interested in buying into something that isn't even Canadian anymore.
But this will not happen as far too many Canadian companies are heavily invested in the ccTLD, and they wield a lot of power. If the CIRA ever "went rogue" and decided to turn .CA into a generic ccTLD., these companies would lead a revolt in government to remove the CIRA of its role as .CA administrator. Canadians would not be happy in losing .CA either, and we tend to be a very territorial nation.
Remember Canada owns .CA, not the CIRA, and Canada is effectively controlled by a short list of monolithic companies with some level of input from the unwashed masses.
And you'd have to be insane to believe not only the population of Canada and our various governments would agree with it, but that Bell, Rogers, The Major Banks, Galen his his Weston Empire, CNR, Thomson, and all the other major resource, media and investment firms in Canada would also be onboard with this insane, short-sighted plan, as they would all stand to lose out, and have absolutely nothing to gain from it.
Never gonna happen.