Is ambition the mother of innovation?

If necessity is the mother of invention can we say that ambition is the mother of innovation? The most famous inventions that our society witnessed appeared as solutions for specific problems. The train appeared when the chariots were no longer suitable for covering long distance travels. The telephone was developed as soon as people started living scattered across the country. When the steam engine was no longer able to sustain the growing necessity for energy man came up the explosion engine based on fossil fuels.