Yup. But it still has brand recognition and most people order something like a triple triple nowadays so it's little more than liquid coffee crisp. At that point, the quality of the coffee hardly matters, and Tim Horton's is way cheaper than Starbucks.
It's similar, but not the same. You're correct about the roasting company, though: Mother Parker's. Drive past them every day on the way to work; smells great in the area.