[throwaway290]

The spirit of the law is protectionism, to avoid people working unregulated and taking jobs away from locals, like with customs the spirit is to prevent fraudsters from skipping import tax and hurt legitimate businesses.

Probably every one who travels (even you) broke the letter but not the spirit of both multiple times. Check work email? Illegal. Did not declare a purchase? Illegal. Even if they want to comply and declare eligible personal purchase via red corridor they would be waved through because they are not the target.

Otherwise you can jail every writer or artist who dared to practice their craft without a work visa and who sold/published later.