I think NJ is a pretty large beneficiary as well; a huge part of New Jersey's economy is dependent on para-NYC activities, ranging from businesses with satellite operations, to infrastruture (e.g. EWR), and property/income taxes from people who work in NYC and live in NJ. Without all that, cities like Newark would be even worse off economically than they already are, and there wouldn't be a lot going on in, say, Hoboken.