Another factor may be the skyrocketing costs of movie tickets. This source [2] shows that tickets went from $4.35 in 1996 to $9.16 in 2021, which exceeds the rate of inflation. Additionally, I'm not aware of any tickets to be had for $9. Tickets are exorbitantly expensive these days [3].
[1] https://www.mekkographics.com/american-moviegoers-by-age-and...
[2] https://247wallst.com/media/2021/03/29/this-is-the-price-of-...
[3] The price for one ticket to Jurassic World tonight at a theater near to me is $18.84. This is in "2D" on a standard screen.