One of NYC’s great strengths is the diversity of its economy - finance, real estate, media & entertainment, retail, fashion, health care, education, and now tech. And the reason tech is growing so fast in NYC is that it is embedding itself in all of these other industries.
Chicago also follows this pattern of tech startups that embed themselves in the city’s larger industries.
It explains why there are lots of sales tech and retail tech companies, for example. I wouldn’t be surprised to see more manufacturing, insurance, travel, and food tech startups emerging here soon based on this pattern. All those industries (excepting travel) have a lot of innovation potential.