[vatys]

I see them used in pro/prosumer audio equipment, synthesizers, and effects, which is relatively low volume and medium-to-high budget. FPGAs (and CPLDs, µC+AFE, etc) are great for these applications because they have great capabilities you might otherwise need a pile of discrete components or a custom chip for, but it doesn’t make sense to design fully custom silicon if you’re only ever going to sell about 50-500 of something.

So sure, prototyping and military, but there are other uses as well. But none of them are super high-volume because once you’re selling millions of something you should be designing your own chips.