Ususally the types of founders who want to build massive ginormous companies (that's a technical term) are different: they a) fail and/or b) don't make things; they're "idea guys" to steal a line from Signal vs. Noise.
You don't get big by thinking small. World changing tech companies tend to have a big vision from the beginning. Manufacturing, mining, or other industries may be different. But you rarely see tech companies that touch 100 million lives without wanting to do that from the beginning.