One of the major problems with anything that isn't on rails is that it is easy to make go away. Unironically one of the reasons for trams is that it's harder to

One of the major problems with anything that isn't on rails is that it is easy to make go away. Unironically one of the reasons for trams is that it's harder to rip up the tracks and delete the service entirely as opposed to bus routes which can vanish in a single day or be altered in incredibly dumb ways. Of course, if you're sufficiently destructive you can rip up any infrastructure.