Is it important that commercial art follows artistic principles like the elements of design? No, it will not be professionally critiqued.

Yes, these guidelines apply to commercial art.

Yes, all art except sculpture should follow these guidelines.

No, professionals do not consider commercial art important.

Ithink the answer is "crash causing a major injury."

Personally, i think the games do because it's actually them controlling it. this might cause them to think it's okay to do it for real. as for animated movies i think they are mostly fine because they're animated. also, animation has come a long way causing animated movies to become more real but 30 years ago this wouldn't be as big of a problem as today.