If you're going to build something, don't build on land someone else already owns. You want your own land, your own domain, your own sovereignty. Trouble is, so much of the choice land - the land where all the people are - is already owned by someone else: By Google, Facebook, Twitter, LinkedIn, Yahoo, and Apple (in apps, anyway).
For my part, I would rather look toward Rutland than Jerusalem. Rutland,--modern town,--land of ruts,--trivial and worn,--not toosacred,--with no holy sepulchre, but profane green fields and dusty roads, and opportunity to live as holy a life as you can, where the sacredness, if there is any, is all in yourself and not in the place.