In Canada, for now, it's up to the particular bonafide collector or the particular target shooter (as the case may be).
Back in 2009, while at the NTI, I spoke with a German attendee who was also active in IPSC; from him, I learned that he was restricted (by the government) in what he was allowed to buy. He showed me a firearms license that folded out like a map and was full of (passport-like) stamps; each of these stamps certified government approval to buy or sell a particular arm; a person's firearms license showed your firearms' ownership history, all in one (map-like) document. He explained to me that the firearms officer would permit one to purchase two handguns for each competitive division in which you participated (i.e.: two for Production; two for Open; two for Standard), and that one would not be permitted to buy new guns unless the old guns were sold first. So, for example, if a guy had two Glocks for Production and two SVIs for Standard, he could - assuming that he was active in all Divisions - gain permission to buy two Tanfoglios for Open, but he couldn't gain permission to buy two Tanfoglios for either Production or Standard unless he'd first transferred away the two pistols that he was already using in that respective division (e.g.: the Glocks in Production, or; the SVIs in Standard). Whatever change you wanted to make could not be made in advance; whatever change you wanted to make had to be approved, in advance, and your firearms license stamped, in person, by the firearms officer. To sell, you needed approval, and to buy, you needed approval, and all these approvals - and stamps - were required in advance.
The United Nations Small Arms Treaty, to which Canada has committed itself, requires countries to implement a plethora of new restrictions (including these onerous German ones that I've just described to you), so - and I'm very sorry to have to say it - this will all be coming to Canada's licensed firearms owners, and sooner (under a Liberal government) rather than later.