The one big issue you're ignoring here is that the effective monopolization of various industries is opening the door to governmental action without the necessi

The one big issue you're ignoring here is that the effective monopolization of various industries is opening the door to governmental action without the necessity of law. Consider something like Visa and Mastercard both deciding to block donations to Wikileaks. Was this an organic action or was it the government aiming to attack perceived enemies by exerting their clout behind the scenes? It needn't be some grand or secretive action by the government either. Imagine a single individual, perhaps a senator or an influential former secretary of state, phones up Mastercard's chair and simply tells him they'd be quite grateful if Mastercard would cut transactions to Wikileaks. What are they going to do? This is the big problem with both the massive scale of certain businesses, their extensive interweaving with government, and of course monopolization.