In Europe this is different though. In Amsterdam we have 10+ cinemas showing a lot of classics too, unlimited for 20 euros a month in amazing theatres. I rarely go to these large cinemas anymore.
I'm actually based in Utrecht ;) Looking at all the comments here it seems there's possibly lots of old films being shown (depending on your geo) but awareness is very low. I've certainly never seem tv ads or posters that advertise old films. Maybe it's something that smaller cinemas tend to do, as you say, but the 10+ screens megaplexes do a LOT more volume. I will definitely look at some of the smaller cinemas to see what they show nowadays.