Most good bakeries everywhere stock multiple times a day as stock gets low. Even the ones selling American baked goods and things like cupcakes because all of these things have shelf lives of hours. Do you believe that New York is the only place in the US where you can get a baguette or a loaf of French bread? Do you think it's the only place you can get a cake?

Having high foot traffic and understanding supply and demand are not unique to New York. The specific type of bagel is, though, because it's a preference rather than a sign of quality. You have fewer bakeries per square mile outside New York, but you have fewer of everything per square mile outside New York. Many cities around the US are plenty dense to support people who make high-quality baked goods.

> Most good bakeries everywhere stock multiple times a day as stock gets low

The stuff that sells. In most bakeries, that doesn’t cover bagels.

> Do you believe that New York is the only place in the US where you can get a baguette or a loaf of French bread?

Nobody claimed this.

> high foot traffic and understanding supply and demand are not unique to New York

It absolutely is. New York has entire American cities’ worth of people in single city blocks. That drives niche culinary diversity in a way that’s impossible to sustain anywhere else in America.

> Many cities around the US are plenty dense to support people who make high-quality baked goods

Again, never contested. But not as wide a variety. You can’t profitably make every sort of baked good fresh every few hours in a town smaller than a few hundred thousand. You can find that within walking distance for bagels, cubanos, naan and dumplings in a lot of Manhattan.