Bought tickets this past weekend - US
I happened to be surfing the CoSport website this past Saturday as the Canadian Phase 3 sale was starting and came across a bunch of event tickets. I ended up with 2 tickets each to Alpine Skiing and Nordic Combined. I had considered buying those on StubHub as the Games got closer and was lucky they came available and I happened to surf the website when I did. Point is, the tickets are out there. You just need to be persistent and know that it may take checking the website multiple times on a daily basis until you hit paydirt.