The industry ain't the same but what you gonna do?
I guess in Tarantino's case he's going to do plays, books, maybe a TV series. I think he likes making films though, I'm sceptical that his next one will be his last.
Theaters took a hit in covid but they still make a lot of money. I saw Nosferatu and The Brutalist in the theater recently and it was worth the money to have that experience. The crowd reaction was crazy to different parts of those films, I never saw those kinds of reactions before.
The model changed a lot, streamers are full of cheaply produced trash that either barely qualifies as a film, or is made to order by execs, based around hiring 1 or 2 famous actors. Theres also good stuff on streamers, but theres so much stuff, that viewers get overwhelmed and good projects might never find their audience. Its going to be even worse when the internet also becomes flooded with AI generated films.