What will be the incentive of a start up company to follow these new rigorous software engineering practices? How many other engineering disciplines could get a

What will be the incentive of a start up company to follow these new rigorous software engineering practices? How many other engineering disciplines could get away with cutting those types of corners for a first version of a product? Perhaps people put planks over gaps when the standard for bridges was lower. It's hard for me to imagine a world where customers demand a product built with strict software engineering practices. Though, that would be nice if that happened, as a user.