So many people lost their lives when we undertook learning to fly, all the way through to rocketry and going to outer space. Every step of the way there were failures and we learned something new re engineered and now we take flying for granted. So maybe someday this kind of travel will be workable, but I dont see it anytime soon.
I just can't get the idea out of my head that when this idea fails, its going to fail in a very catastrophic way, something that 'wasn't considered possible', or wasn't even considered. The forces involved here are pretty hefty, the environment uncontrollable and unforgiving. Let alone any consideration for vandalism or worse, a structure like that seems especially vulnerable to those kinds of things.