Unlikely. If a company does not have a formal BBP, they won't pay 99.99% of the time. Brokers are also not interested in vulnerabilities in companies. They usually only buy vulnerabilities for standard software (components).
I’m asking earnestly; it seems like if nobody actually cares about these gaps then there shouldn’t be an economic driver to find them, and yet (in many companies, but not Burger King) there is.
Is it all just cargo culting or are there cases where company vulnerabilities would be worth something?