If I may ...
Ok. May have erred a bit. Those companies, if they have no presence at all in any given state, should not be able to force them to collect sales taxes. Interstate commerce violation? Also, how is it possible, if a company is doing nothing other than taking an order, finalizing a sale, and tendering a shipment to UPS, FedEx, or whomever, is responsible for, and forced to collect, sales taxes of another state in which they do not live in or operate a business from? How can that possibly be legal? What happened to each state being its own sovereign entity? How can a State, allow another State to force one of its citizens to do something against their will? I do not see this fight ending at this ruling. There will be some enterprising folks that will challenge this from a different angle.