They also cannot take legal action because an emulator runs on an OS. And Valve is simply advertising 'hey, this thing runs on our OS.' Because Yuzu is built from scratch, Nintendo CANNOT take legal action against the emulation creator, because it is now their own official program data. Thing with Yuzu, by itself, it's totally fine. Nobody bats an eye about emulating entire OSes. It's done in technology businesses around the world. So you can run Windows on a Mac, or run Linux on Windows for example. On any of those systems, you can emulate the other using a virtual machine. Take for example Windows, Linux, and Mac OS.
