3 reasons: - they are too big now. No one care, no one is paid to care, and no one has any incentive to change that. - they are too big now. Tpoo many custome

3 reasons: - they are too big now. No one care, no one is paid to care, and no one has any incentive to change that. - they are too big now. Tpoo many customers, with too many dumb problems. Just sorting out the real ones from just the idiots would cost too much. It's more economical to just reject in mass, and loose a few clients, when you have the monopoly. - they are an easy legal target for huge sums of money. If they tell you why they blocked you, you can fight it in court. If they don't, you can't.