All of those places you listed don't tolerate a homeless/mentally unstable on public transport. Thats the only way it can work. No alternative. Strict enforcement of public behavior on them. The left leaning policies in all the big cities, where public transport would benefit most, aren't compatible with this requirement. Ours only recently started gaslighting us into claiming they never supported defunding the police!

I know exactly zero people that use public transport because of safety, specifically homeless/druggies. And yes, we all tried. I was an idiot and went with a kid, for my first and last time, after listening to a local, with mental blinders on.