Borrowing some of the points from that video, a high-end bicycle – let’s say a road bike – is very close to what could actually be used in competitive road cycling, with all the technological and material sciences advances included. Whereas a standard car like a Toyota Corolla would need substantial further investment to bring it to competition grade (eg rallying). And a high-end, track-inspired road-legal car would be exceeding $100,000 easily.
Certainly, in the average quality range, the price of your average road bike and your average automobile will be a chasm away. But I figured your question is focusing on the high end of bicycles.