I don't think all the cool tools are coming out for the Mac but it's undoubtedly skewed towards it. The reasons for this are a mix of cultural, social and technical, along with momentum.
Speaking for myself, when I was getting into serious programming, it was right in the heyday of the Delicious Generation (Delicious Library, Disco, AppZapper and more). Back in the 10.4 / 10.5 days, eye candy and ease-of-use were the top priority. Some notable apps came out and they in turn inspired other developers to follow the same path - a polished user experience is absolutely vital. This creates a self-perpetuating cycle, where the existence of such apps creates fans who dream of making apps like that (I'm one of these).
Speaking for myself, when I was getting into serious programming, it was right in the heyday of the Delicious Generation (Delicious Library, Disco, AppZapper and more). Back in the 10.4 / 10.5 days, eye candy and ease-of-use were the top priority. Some notable apps came out and they in turn inspired other developers to follow the same path - a polished user experience is absolutely vital. This creates a self-perpetuating cycle, where the existence of such apps creates fans who dream of making apps like that (I'm one of these).