People who love coffee brew it themselves. They don't need to endure long lines and wait for some poorly treated minimum-wage employees to burn it for them.
I suspect coffee preferences, whether someone makes it for them or not, might be down to whether their place of work is conducive for even making coffee. Perhaps there are socioeconomic lines as well that divide people.
Do most people feel the need to have their coffee made for them at a fast-food establishment?
I work on the road/various jobsites throughout the day. My first coffee is almost always one I make at home. On a long shift or a cold day, I sometimes want a second coffee, and unfortunately Tim's often the only option around.
I don't drink coffee myself but last I heard, Tim's had their own brand of coffee so hypothetically if somebody likes it, they can still brew it at home.
I had a great place to get roasted-on-premises coffee, but the guy who ran it got me interested in the process, ran a course in how to do it, and then sold the equipment to do it. I'm a nerd. Of course I nerded out and started doing it myself!