Wrong question.
"What do you think? Is this just another example of trying to create science fiction fantasies in real life? Or would such an elevator have real value?"
The more obvious question: Is this just another example of a company creating free advertising/PR at the expense of the media and their readers - because the media editors aren't bright enough to understand that no serious business attempts to work off a 50 year plan. Most can't meet the goals of a 5 year plan. Way to be used not-so-Smart Planet.