Your analysis misses the incredibly important caveat that revenue rises with inflation – or sometimes even faster.

50 years ago, a movie ticket was 0.50 cents in revenue. Today, it’s $25. That’s a 50x increase… a dollar in 50 years might be worth $0.02 today, but a movie ticket in 50 years is worth about a movie ticket today.

And surprise movies are a rip off and people have stopped going.