Do some people go to the movies just to see the movie? Is the bigger screen that important?
Maybe they want to see it as soon as it’s released instead of waiting for it to be available to stream. Also yes, some movies are definitely better and more immersive on the big screen with the big sound systems, like space or adventure-type ones with special effects.
You’re making the assumption of one person per apartment and one deportation = 1 vacant apartment which is highly unlikely. Probably a whole family in the apt. so it may not even be vacated at all if one member is deported. Even if the whole family is deported that’s only like 1 vacant apartment per at least 4-5 or more deportations. So yes, more housing will become available but not as much as you are estimating. IMO the effects will be felt much more in the labor shortage than in housing surplus.