"how freakin long are *we* gonna keep building tightly coupled software that needs to constantly evolve!?"
At first I wanted to say "until programmers stop sucking so much", but unfortunately, there is often much more to the picture than the usual "you're surrounded by idiots" response. Many of us do continue to build tightly coupled software, and we do it for a variety of reasons. Some of us just don't know any better, we've never been exposed to or experienced what exactly people mean by "loosely coupled" software. Others see creating loosely coupled software as another layer of complexity that they just don't need inside of their applications. And yet others, have seen and experienced it, but still don't understand how to implement it effectively. Unfortunately, at this point I think that majority of developers fall into the first camp, they just don't know what it means to build "loosely coupled" software.