Had a similar realization when I caught up with my old boss at a big aerospace/engineering conglomerate. I looked it up and it had an $11 billion market cap. He (being in a smaller town) hadn't heard of Uber, which has ~$16 billion market cap.
And the company I work for, which employees about 45,000 people in 25 countries, mostly in factories building complex electronics, only has a $2b market cap.