[xenonite]

Specifically w.r.t to advertising: In socialist contries there is often only one single brand of a certain product. This removes the need for advertising. But without competition, productivity goes south with time.

[WalterBright]

Socialist products never seem to be competitive in the world market. Nobody wanted to buy Soviet cars outside of the USSR, for example.

[jncfhnb]

People seem to like Medicaid just fine though

[OkayPhysicist]

There are notable exceptions. The AKM and RPG-7 are some of the most widely marketable weapons of all time.