I get your point, but say you were selling food instead of services. It's on you to make sure that what you are importing doesn't break any rule (GMO, other stuff, etc...).

I think it's fair. You shouldn't break the law. That regulation may be overkill in terms of punishment, but that doesn't mean that the regulation itself is wrong. Laws are imperfect. Regulations exist in every industry and there's a reason for that. Over regulating is a burden for a business, but under regulating is bad for customers (or the environment, or whatever).