The exchange is digital now, so the trades could happen anywhere with fast internet. If the NYSE moved to another city, the same companies and money would follow.

this shows an extreme misunderstanding of how a large stock exchange works

this isn’t just “fast internet”… this is significant amounts of dedicated fibre being run to offices and data centres as close as possible to the building, microwave links, and a whooooole lot of systems being build specifically around known latencies and locations