The skyscrapers and bridges that are finished on time and on budget are the ones that have been built before. For physical structures, it makes sense to do the same work again, because then you have two bridges or two skyscrapers instead of only one. People can live in two different locations, and they can cross yet another river, which is useful.

For software, if you need another copy, that's a trivial task. It's more on schedule and budget than any skyscraper or bridge could ever hope to be. Once built, we can use it everywhere. The only thing that requires any real effort, is building that very first skyscraper.