> not in industrial hubs but urban cities An urban city can be or have an industrial hub. By industrial I don't necessarily mean manufacture. > Urban cities t

> not in industrial hubs but urban cities An urban city can be or have an industrial hub. By industrial I don't necessarily mean manufacture. > Urban cities tend to have more than one employer too They can also have those employers at a couple hours commute (not walking) from each other. That helps my point, not hinders it. > there were maybe a dozen or so companies that were hiring devs where I lived Assuming those were all within 15 minutes walking distance, then it would qualify as the kind of industrial hub I mentioned - although a dozen or so may not be good enough for an employee to shop around and get good deals. > now after moving there are around 800 companies that hire devs Again, within 15 min walk of each other? I find that hard to believe, but assuming so, that is an industrial hub.