Don't get me wrong: I'm a big fan of DDs. And their donuts are decent, even good. The thing is, they are so ubiquitous that they form a baseline. If you aren't better than Dunks, you don't get to play in the first place.
It's like jacks or better to open: a pair of jacks is a perfectly respectable hand in five-card-draw. But if you set that as your opener, everything else has to be better. Or the Maxwell House Haggadah: for nearly a century, the coffee company has printed a cheap or even free haggadah (as an advertisement that coffee is kosher for Passover), which isn't a bad one. And it means that, to sell a Haggadah in the United States, you have to be better than that.
So Dunks maintains the minimum donut standard in the Commonwealth.
It's like jacks or better to open: a pair of jacks is a perfectly respectable hand in five-card-draw. But if you set that as your opener, everything else has to be better. Or the Maxwell House Haggadah: for nearly a century, the coffee company has printed a cheap or even free haggadah (as an advertisement that coffee is kosher for Passover), which isn't a bad one. And it means that, to sell a Haggadah in the United States, you have to be better than that.
So Dunks maintains the minimum donut standard in the Commonwealth.