Well, I am not sure who owns Tim Horton's now. Didn't they merge with Burger King, which itself has been sold by various "private equity" groups multiple times. Then, Molson's merged with Coors. Budweiser is owned by a Brazilian company. I also read that there was an attempt to create a maple syrup cartel, but that it has to be careful because there are a lot of underutilized maple trees in New England, New York, Michigan, etc.
In the 50's, the whole world was owned ultimately by Scrooge McDuck. Maybe now everything ultimately traces back to Rupert Murdoch and Warren Buffet. Nothing is really "national" any more. Canadian National and Canadian Pacific fought over Kansas City Southern Railroad (whose tracks extend into Mexico and south of that), and the latter won. Canadian National has a lot of activity around Chicago. Hockey isn't even Canadian anymore. The Arizona Coyotes are in the National Hockey League (trust me, there is no native ice in Phoenix, and there wasn't even in the Ice Age).