Maybe this raises a serious question. Why are so many people (including myself) reliant on one company for handling their payments? Maybe traders should start adding alternative forms of payment to their excepted payments. I know I will.
It's good to accept more than one kind of payment for flexibility, but is the dominance of one payment method really so awful? It always seemed like a natural monopoly to me. It's so closely tied to paper cash... (which you'll remember must be ubiquitous and the only currency to function- except in extreme cases)