Just to add to gpresot's comment, every large brand has this issue. McDonald's products need to taste exactly the same around the world and most of their brand's value lies in the ability to create a stable, unchanging product that is still attractive to their market segments.
Buying single-origin, and accepting the instability that comes with it, by necessity requires microbranding.
In my experience, McDonald's burgers taste noticeably different in the US and Canada. So I think it's a per-country thing (especially when, e.g. Canadian McDonald's only uses Canadian beef).
Buying single-origin, and accepting the instability that comes with it, by necessity requires microbranding.