It's worth noting (because I chimed in) that I am not a developer. I work in sales and marketing. Every instance relative to development that I have been a part of in my professional life has been mainly in communicating. What does sales & marketing need, what does development and logistics need, what does management expect, etc.
Of course things don't always go to plan, and often times buffers are built in, unless something is heightened in importance, like debuting an item at NAMM before you have it in stock or fully developed. This is something I deal with in this industry, as well.
By the same token, hitches in development can significantly damage an items viability if it is delayed or under delivered. Sometimes the question isn't "how much time do you need" and instead "this is how much time we have, what can we do to meet this deadline". In the case of the editor, it's not a do-or-die proposition, but the fact that it wasn't ready for launch along with the Stage has to be a significant failure. Ok, it happens. What no business benefits from is certain expectations not being met with a cavalier attitude that "when it's done, it's done". Maybe Kemper works differently, I don't work there to know, I just speak from my experience in this industry.