It's a bit like asking how you feel about being at the mercy of Linux, or web browsers, or SSL. We work with the technology that exists.

That's a little bit facetious, but though there are lots of aspects of the card networks that I dislike (and suspect will change), they work pretty damn well for most transactions. We could devote ourselves to usurping them, but it feels more interesting to see how rapidly we can advance the state of the art instead.