Originally Posted by Hoshnasi

So in short term, no return on investment ($$$) large enough to recoup expenses. In the long-term, you can't guarantee the nirvana you described above would even happen within the society to make it profitable. If NY, OR or the other states/cities mentioned in this post and article are a clue, not nearly enough people will be riding to make this remotely cost even in ten, heck even fifty years.