Same here - and I've been to theatres in multiple EU countries. People definitely don't talk, absolutely don't talk on their phones(they would be kicked out if they did), and eating - meh, just the standard popcorn stuff. I've been to one theatre which also served proper food but you actually sat at a table not in a theatre seat, it felt more like a restaurant with the film playing in the background.
For me "the standard popcorn stuff" is already enough to ruin my experience. I'd gladly pay more to go to a cinema where eating or drinking anything is strictly prohibited (as it still is, for example, in my hometown's best cinema, which sells absolutely nothing apart from tickets and subscriptions).
