In my view, a person who owns a collection of works of art will want to sell it at a serious location that has a name and that will promote the collection. A real collector wouldn't simply sell their collection on the Internet. None of the collectors who purchase my works would agree to sell their collection on the Internet simply to avoid the 5% requested by the artists.
We support artists in Canada or we don't support them. That's the real question. We're Canadian or we aren't.