Yes, definitely. While I am no longer inclined to build my own rig (it was fun in younger days) but now I would rather spend money to get a prebuilt rig.

AFAICT, hobbyists with deep pockets; freelancers or small boutique shops doing consulting in ML, AI or 3D graphics; research labs with good funding in these domains will be the key market for such rigs.

I have got my rigs from: https://www.scan.co.uk/3xs/custom/cad-graphics-workstations