They have become so powerful through their vast sales and profits that they can effectively lobby for their points of view.

lobby 是动词，意思是"游说、进行政治游说活动"，指通过影响政府官员或立法者来争取对自己有利的政策或法律。这个词来源于名词 lobby（大厅、门厅），因为游说者常在议会大厅进行游说活动。