The Cincinnati streetcar cost almost exactly $150m and it serves like 0.5% of the metro population. It runs a 3.6 mile loop, that’s just over a 1.5 mile walk from one end to the other. I can walk it in 20 minutes.
Don’t get me wrong, I agree with the sentiment of the post. We need to invest in public transit. Where I live there are zero non-car options. But don’t pretend you’re building comprehensive public transit for $150m.