So to preface, I only really use doordash when I’m sick and I want to get food without spreading whatever I have. So I don’t open the app much. I just noticed that dominos is on the doordash app in my area. Why in the world would anyone ever doordash a dominos pizza when they already do delivery anyways? That just seems like a great way to burn a bunch of extra money for a worse service.
People generally buy things a certain way or place for 3 reasons - cost, quality or convenience. Door Dash already has tons of stuff in their app.
IMO, people are used to it. It’s very convenient.