I think that saying that something does well without marketing is making an implicit argument that it's doing well for some other reason. A basic model might b

I think that saying that something does well without marketing is making an implicit argument that it's doing well for some other reason. A basic model might be success = (value + delta) * ( marketing + epsilon). If you give success a large number and say that marketing was zero then the model leads you to guess that there is substantial value in the product itself.