You may have seen or heard the news about @dolphin / Valve / Nintendo from a few hours ago. If not, read e.g. https://www.pcgamer.com/nintendo-sends-valve-dmca-notice-to-block-steam-release-of-wii-emulator-dolphin/ from the amazing @wes.
Unfortunately pretty much everyone has been getting the legal details wrong, incl. Dolphin themselves on their blog (now fixed).
Quick thread with my personal summary of the situation.