Read the emails: Valve helped Nintendo kick the Dolphin Emulator off Steam

When those measures are circumvented, Nintendo and third-party game developers suffer tremendous harm because, for example, individuals can then use the emulator to play pirated games.

Those pesky pirates are playing games available exclusively on the second-hand market on consoles we're not selling anymore!

Edit: Word order to make it less confusing.

Valve has made some incredible games and hardware, but it doesn’t mean they aren’t tricky bastards.