Cars would be cheaper (to make) without seat belts and airbags.
Medicine bottles would be cheaper (to make) without child-proof caps.
Private companies cut corners that public-sector employees are legally forbidden to cut. I spent about a decade working in public education. Then I spent 2 years at a major for-profit online university. "Cavalier" does not begin to cover it. And as the market reached saturation, with a corresponding drop in growth, they put the screws to us to find more ways to cut costs so that shareholders wouldn't notice the double-digit drop in growth. It was a rickety wooden train, accelerating to slapdash speed.
It's usually cheaper to do shoddy work. And there's only one direction those savings travel: up, to executives and investors.