For Apple, the cost of building this elevator to space is like a penny. It would cost 5 billion pounds, which is roughly 8.08 billion USD. For R&D, we're looking around (guesstimate) 10 ~ 20 billion. So, after all is said and done, Apple would still have $35 billion.
Space Elevator Generations: (Timeline; not actual "generations")
Sending shipments up.
"Cleaning" our air space up there
Building Space resorts and Hotels
Hotels / Resorts open to the public.
This is where Apple's ROI (return on investment) would start flowing in. First the Rich would only be able to afford Space hotels... Then as R&D is slowly paid off, the price would come down to a point where we could afford a room up there.
This is most likely a dream that will never happen. (Apple building the Space Elevator). The Space Elevator is coming, even if Apple by chance doesn't take on the challenge.
Source for price: http://www.timesonline.co.uk/tol/new...cle4799369.ece