B2C... I think "there is no primary topic" actually is a valid rational for a move request. "There is no primary topic" is (or should be) the default mode in disambiguation.  You noted that you saw "no argument for why this topic is not primary". I think that approaches the issue from the wrong side... it unfairly asked In ictu to "prove the negative".  I think that in order to say that one topic is primary, we need some evidence of the positive... that the topic under consideration actually is significantly more notable/recognizable than any of the other choices.