Managing risk is important for business owners. It is extremely expensive to remove a tenant who stops paying. For a small landlord, it can be devastating. Al

Managing risk is important for business owners. It is extremely expensive to remove a tenant who stops paying. For a small landlord, it can be devastating. Also, for an employer that has a significant investment of capital in physical inventory, intellectual property, public reputation, etc., a poor hire can destroy a business. What does China have to lose by preventing someone from flying? It sounds like it is used for social engineering and stemming political dissent, which is creepy.