realtime virtual set


It may be technically feasible. But too many green screens over the majority of the length of the movie is bad. It screams FAKE.
Somehow it turns people off. Like drinking Ersatz Coffee. Yuks.
For the movie producer it is a cost saving.
In future, movies can come with a special label to prove authenticity. "No green screens were used in the production of this movie".
Movies can be required by law to state accurately the % of green screen usage.
Then let the cinema going public decide whether they want to watch the movies with heavy green screen usage.