Trade secrets never expire and sharing them is a crime, so currently people can take them to their grave and the government will have their backs in doing so. A single person's secret is also unlikely to matter much next to the potential of global corporations' secrets, and the nature of corporations is that they are made of people who have little reason not to take an offer with a competitor after they've learned the necessary secrets to do their job. Hence, don't protect those corporations unless they offer something in return (explicitly divulging them/contributing to the common knowledgebase). Without that protection, knowledge can more naturally spread.

The fair compensation they should be offered is time limited protection. Otherwise it should simply be legal for any of their employees to spread that knowledge. Giving unlimited protection to not divulge knowledge is counter to the entire point of "IP" law.

"The" Coca-Cola formula would have lost its patent restrictions a century ago. It's still unshared. Why exactly should we continue to grant any legal protection from an employee sharing it?