Comment by noirscape

You're probably thinking of the Steam debacle. Nintendo wasn't responsible for that.

What happened was that Dolphins developers wanted to release the emulator on Steam. Valve, independently from anyone else, send a message to Nintendo's legal team asking if they think it's permissible to distribute Dolphin on Steam. Nintendo's lawyers essentially responded with the company's policy on emulation ("third parties doing emulation is not okay") and that they might consider looking into their options should Dolphin release on Steam. After that, Valve told the Dolphin developers that the game was banned from Steam.

Nobody send any legal threats or anything; no C&D was issued, no DMCA invoked, no lawsuits, nothing. As far as the legal side of things is considered, the only thing that happened is that a business refused to do business with someone. (Which is generally their right to do, as long as it's not because that someone belongs to a protected class and being an emulation developer is not a protected class.) That's why Dolphin's devs also effectively had no recourse, even if they could pay the necessary lawyers. You can't force someone else to sell/publish your stuff.