Instead of trying to reinvent the Nile, why not focus on the features that make it ripe for farming? Fertile soil and easy transport of goods. Can that be done

Instead of trying to reinvent the Nile, why not focus on the features that make it ripe for farming? Fertile soil and easy transport of goods. Can that be done artificially? If so can it be done virtually? It could take a never ending supply of money to sustain another Silicon Valley. Look at Dubai Internet City.