The Bay Area is of size 6,000-10,000 sq. mi. with a population of 7.7-8.8 million people[1]. NYC is of size 302 sq. mi. (yes, really! That's 20x-50x smaller) with a population of 8.1-8.6 million people[2]. Perhaps it's easy to underestimate just how much of a big world city NYC is and how varied its people and industries are compared to what they might be used to on the west coast.
1. https://en.wikipedia.org/wiki/San_Francisco_Bay_Area
2. https://en.wikipedia.org/wiki/New_York_City