That's my point, you can build it, and they won't come, it's a waste, like the CA HSR nonsense that was obvious nonsense from its start. These things often are masquerading as social justice, feel good wannabes that make zero sense.
Atlanta has a streecar no one rides, so does Cincy (who I think just made it free). This was to try and develop a black area of town, it didn't work. The subway here is "OK", we use it at times, and I'd hate to think what the city would be like without it, but it's way underutilized, and very costly.
All the plans here for bus rapid transit and light rail cost a lot of money and seems to me doomed to failure as well. If people largely don't like the product, it's going to fail.