Better than I could put it
Absent other options (and local bus is not an option) they will drive. That’s where rail comes in. We can build it, as some have suggested, in places where people don’t want to live right now in hopes that people will want to live there. Or we can build it where people already are, and where more people are coming, to take some of that load. We’ve learned from Main that people will ride rail if it goes where they want to go. We’ve also learned that dense development is most likely to occur in places that are already dense. Rail isn’t causing density — the density is coming anyway. Rail, done right, is a way to deal with the traffic that density brings.
Focus on this sentence:
We’ve also learned that dense development is most likely to occur in places that are already dense.
We ignore lessons from other cities at our own peril.