It's not just specialization, often it's overspecialization, driven by commercial interests. Even though a generic tool G can do tasks A, B and C well, people are told to buy specialized tools for each of those tasks that are only marginally better at their specific tasks (sometimes, not even that) at the expense of being worse for the other tasks. Hell, sometimes it's the same tool, but with a specialized label and extra markup (e.g. disposable shaving razors for men and women which differ only by a) color, and b) price). But people fall for that.