I work in the Robotics industry. While the algorithm for our path planning would be a trade secret, how path planning is pursued is not. It's a fundamental concept in robotics. To extend the metaphor, it would be as if my company thought that any robotics work that involved path planning would violate their IP, because I did path planning work with them. It's nuanced to be sure, but some companies are very aggressive as to prevent you from having mobility in your career. Sometimes in a genuine effort to protect their IP, but also sometimes to reduce your negotiating power or punish you.
Protagonist gets to open the vault of secret formula after decades working their way to the top. Inside is a Coke label with the ingredients part unprinted.
It was always the brand.