Web possbilities

Today I heard about something I had never heard of : "Xanadu Project" and  "The Hypertext".

His father, Ted Nelson imagined a system of storage. This system would allow people to falitate nonsequential writing i.e allowing people to choose what they want to read in a document. Thanks to the hypertext, people would be able to track down every information existing in the system.

The image I had in my mind is a gigantic library, in which every book was connected with other books, allowing people to switch from one book to another through hypertext links.

Explained this way, Xanadu offers people what they have always dreamed of : infinite connexion. Connection of idees, connection of history facts, and connection of people.

But after today's meeting with Ted Nelson I'm having several issues :

-How is it possible, TODAY, to store such a quantity of information knowing that only Google connects together tousand of computers just to actualise new web materials ?

-Why would we need such a software as Xanadu to gather information since Internet already offers more information that we ask for?

If anybody has answers/theories to those questions I'd be glad if you share it with me.