Oh no, I am certainly not trolling. I agree, at this point the chance of failure will only decrease.I am just making the point that you never know what can happen... failures certainly occur in the middle of a good string. Let's hope this is not the case.
Boeing doesn't market the Delta IV because it's operated by ULA, which Boeing co-owns. For commercial payloads, there's no reason for Boeing not to point customers to the cheaper and more provably-reliable Atlas V, which they also co-own through their stake in ULA.Delta IV is no longer Boeing, it's ULA. Atlas V is now just as much Boeing as Delta IV is.
Boeing doesn't market Delta IV because it was busy selling commercial launches thru ILS Sea Launch.