Clients for large router ?

Hello. I'm finishing building my router with a useful area of 3000mm x
2000mm x 300mm (150" x 100" x 15"). I started it for fun, but now that
I'm ending it, the cost is high. The machine is about 250Kg, very
solid. My question is that I don't know what market I should aim for
to have some return of investment.

Some of you, for sure, use routers to work, not only as hobby. What
industry are your main clients ?

I live in Portugal, and in my area I think that only 2 routers are
working, only for 2D cuts (plate cuts), both connected to the sign
industry.

Filipe