Another thing that happens is that social services (healthcare, DMV, probation office, welfare) move offices out of expensive transit dense areas to cheap far flung offices. Then local governments force bus routing to these places, it leads to a miserable experience for everyone involved.
The best measure of a transit project is "How many people use this per day". ie is it doing something valuable.
Note: I don't know of a solution for this other than more holistic government service planning. I do think it's valuable and good that those in need of government services can get there without a car. But it isn't always the sole fault of transit agencies that they have low ridership slow busses.
Transportation and real estate are two sides of the same coin. They should be part of the same plan and budget. Each bureaucracy whether public or private has its own mission and budget. It’s often easier to dump a problem onto another organization so you can declare victory on your organization staying on time and under budget.
Government services that move to remote offices to "save on rent" should be required to fund out of their budgets the new bus route that is now required for people to get there. Suddenly the "savings" isn't so much.