Interesting! That was my experience in Europe even 10 years ago, but they haven't caught up in NC, Vegas, and the other US cities I've been to lately. Interesting hearing the NYC takes in this thread! Both cash, and modern chip/tap readers at restaurants, neither of which I see.
I heard this mess has to due to banks and CC companies (Visa etc) fighting over who implements the changes, while the system in Europe (and Asia, and South America...) doesn't have that division, so they get the tech mainstream fast.