The Senate passed the Marketplace Fairness Act this week, and everyone seems to be on board with the bill: Republicans, Democrats, the states, even large retailer Amazon, who would be directly inconvenienced, is on board. Everyone, that is, but online retailer Ebay, who is supposedly concerned about the bill's impact on small businesses. Ebay's concerns, and the relative enthusiasm with which the bill passed the Senate, demonstrates a divide in the business world that goes beyond market size to market scope.