Was going to agree with you and then I read other peoples thoughtful replies, and they’re right.

Mine, and your kneejerk reaction doesn’t solve the current situation - and there are already laws around NDA’s and criminal activity, see here.

If a company is hiring in a celebrity and the celebrity is working for that company then perhaps make sure that the company is wholly responsible, with proper repercussions, financially, commerically and criminally if neccessary. Also make it that the company is still responsible if the Celeb is hired through third parties and through different hiring structures - the responsibility still heads up recursively to the top.

The only way to prevent this is to make sure that heads of the companys bare the responsibility for hiring someone known for this sort of behaviour.