Copyright-infringing, for sure. But I am skeptical that anyone is losing money on the those old MAME Roms. I have an Anbernic (bought on Amazon), and though there are a handful of pirated games it came with that I like, I was at least as excited to see that flashing AmberELEC on it supports Pico-8 (which they didn't pirate and include, I bought it and installed it, along with a bunch of carts).