Many (most?) software projects exist in environments that demand predictability. Businesses need to be able to make promises to clients and potential customers in order to make sales and garner trust. In any remotely competitive industry these are two absolutely essential ingredients to success.

I mean, think about the software you use. Of all the shops that produce that software, which ones do you trust more than others? I'd be willing to be it's the ones that delivery predictably. At the very least the ones that deliver updates reliably - as in they do what they say.

Granted, every industry is different and some rely on trust and predictability more than others. Building an organization that is good at that is very difficult - and that cost has to come from somewhere doesn't it? In my experience it's at the cost of time spent building the product. A tradeoff between reliability and quality, if you will.