You can get most of this at traveling bargain sales and flea markets. Some are sold as "home owner's specials" at convenience stores and also leading retailers. nails, screws, and fasteners split, break , and fall apart, as does sockets and ratchets. Drill motors heat and smoke under little more than one hours use. All these things can not be good and contribute to incompetence and waste.

The short answer "greed" the big boys with the power allowed this when pride in workmanship and craftsmanship went out for lunch. That reminds me of the people that are ok with using that crap, that most have to be retrained when they are given more than a half hour for lunch.