Google Glass (2013)
Google, a software giant, launched a face-worn computer with a tiny display and camera. It drew huge hype and a $1,500 price. Public discomfort with the always-on camera and thin everyday use sank it.
Glass became a punchline and was pulled from consumer sale in 2015.
Google retreated to enterprise uses, a warning about software companies overreaching into wearables.
It is the cautionary version of OpenAI's story: a dominant software firm can still stumble badly when it tries to put hardware on, or near, people's bodies.
