I too am skeptical of government-granted intellectual monopolies, as Richard Stallman correctly names them. Trademarks are the least offensive of them because they expire relatively quickly and are designed to prevent genuine consumer confusion. Trade dress rules help prevent consumers from unwittingly buying products from Company A while thinking it's Company B.

This video game creates zero risk that a consumer will buy furniture from the wrong store, so trade dress should be inapplicable. IKEA would likely even lose in court. But as the article points out: legal proceedings ... get really expensive.

This move was pure bullying by IKEA lawyers.