also important to remember the 1.5 hour Marvel film almost certainly took more human hours in the input side than virtually any video gameThis is simply wrong.
Marvel movies (and indeed, most studio releases) are generally produced and released within a year or two. Only the biggest blockbusters have crews in the hundreds, and it is rare for a movie to have a crew in the thousands. For example, Endgame is one of the most expensive movies ever made...and production and post-production (i.e., VFX) took less than 2 years. Dune (2021) was filmed and post-produced in under 2 years. Tenet, Nolan's most technically complex film, was actually filmed and post-produced in just over 1 year. (But contrast to Avatar 2 and 3, which have been in production for over 4 years and counting.)
On the other hand, almost every AAA game of the last decade has spent years in development with a crew of hundreds for almost the entire time. For example, Red Dead 2 was in development for 7 years. Starcraft 2 was in development for over 5 years. Destiny was in development for 4 years.
Note that the above timeline does not include pre-production work (like writing the screenplay, casting, hiring crew, raising funds) because in the movie industry pre-production work proceeds very slowly (for example: Avatar 2 was in pre-production for 7 years; Gemini Man for over 20 years), but the actual production and post-production (i.e., the actual making of the movie, editing, FX) happens at a lightning pace. In the game industry, the creative parts happen in tandem with the development of the game itself.
Also note that while movies can have large crews, the different teams aren't all working at the same time; for example, film crews and other production crews rarely interact with the VFX or other post-production crew.