Ghostbusters became a pop culture phenomenon well before China was seen as a viable Hollywood enterprise, meaning awareness could have been an issue.
Ghostbusters will still be playing in several countries and has plenty of opportunities to gross a decent amount of money.
China has become a massive market in the film industry; it’s currently second only to the U.S. As such, that country in particular is highly coveted, but not every American film can capitalize on China’s booming business.
In 2006, Pirates of the Caribbean: Dead Man’s Chest was denied access for its use of ghouls and cannibalism.