How could it realistically be enforced? Never mind whether it does what we want, can we even perform the action?
Imagine that we send anyone who orders that ransom payment be made, or those who conduct payment are all sentenced to death by boiling them feet first in oil. Imagine that no judge or jury shies away from the punishment. Then imagine that there are 1 million of these crimes per year within the United States. How many people are executed? 15? 600? Unless the government's doing ransom audits monthly, how the hell will they ever catch such people? Whistleblowers are safe even if they don't whistleblow, they're not on the hook for punishment. And they're not seeing something so unethical they feel morally compelled to act. Just coworkers who are trying to keep the company from falling apart (potentially even saving the whistleblower's job too).
The criminals might try to leverage this by using it as further blackmail material, but that doesn't work in game theory. The individuals are relatively poor, so they can't be milked individually, and the business can't afford ongoing, indefinite ransom... changes the equation into the "definitely not worth it" category. If the individuals could afford it (in the strict sense), then they will refuse orders to covertly make payment, because then they are on the hook personally... so the criminals are going after the small fish and losing the big.
This is unenforceable.