Right, the main advantage of smaller chips is that they consume less energy. This makes them really useful for stuff like mobile devices because you can extend battery life while improving performance. However, for vast majority of applications such as chips in cars and appliances, it really doesn’t matter because these chips aren’t doing computationally expensive tasks to begin with. There is far more demand for these types of chips then there is for bleeding edge ones for stuff like phones, tablets, and laptops.