I know nothing about this kind of metamaterials [0] but would it be possible to replicate them at an industrial scale? For things such as superior acoustic insulation and so on?
My completely uneducated guess is that this is probably similar in approach to ‘Vantablack’, in that you'll have to orient the scales a certain way relative to each other and the base. So they'll need to be likewise ‘grown’ on the surface, in a slow and very expensive process. (Though apparently there are VB variants as spray paint, presumably with lower absorption.) Of course, this is after someone even figures out how to make such scales and slap them together on the base.
This pavillion is the largest object on which VB was used to my knowledge: https://www.youtube.com/watch?v=xxkvKJmlyHQ
However, it's hard to imagine VB being grown on it instead of sprayed, and the next-largest candidate seems to be the BMW X6.