Aye, the cost per transistor is down only 25% compared to 28nm I believe. A paltry sum compared to what used to scale for a nigh doubling in potential density.
And this paltry savings sum gets eaten right away by the generational upgrade. Because AMD is not selling transistors. They're selling GPUs and if customers are going to upgrade, these GPUs better come with 30,50 or even 100% more transistors in next gen.