The advice is for startups. No startup could have released the iPhone as its first product. Imagine the dev cost! Apple's first product - the Apple I - was an

The advice is for startups. No startup could have released the iPhone as its first product. Imagine the dev cost! Apple's first product - the Apple I - was an assembled circuit board. Basically a motherboard. Very targeted audience, very narrow scope of value for the first release. They layered on functionality from there. The iPhone came almost 30 years later.