[user104658]

Originally Posted by Beso

We have green screen now, where you can have any backdrop you could ever dream off. I doubt this is as significant as the screeching karens would have us believe.

That's not why movies film where they film. If anything it's the other way round NOW (they film on non-US city streets and then edit in a US-city backdrop, shop fronts, etc).

Movie-makers don't film in the US because it's too expensive. What was said above is correct: this won't force them to film in the US, it'll just mean they don't make the film at all.