I don't think it was like that in the beginning. Running a cinema (movie theater) was a normal business until Hollywood milked it to the extreme. They created their own chains of multiplexes in many countries to push their idea of how the business should work.
These days modern cinemas are built like tourist traps with customers having to either walk through/past chain restaurants or having to find some weird side door to enter directly. It's quite a difference to even the 80s or 90s when cinemas had impressive/glamorous lobbies.