In my experience (and I have a great deal of that), true product Quality is dependent upon an endemic cultural philosophy of an organization; not a single tool or technique. It's a shared discipline, and a cultural imperative.

It's like those ads for exercise machines, where professional athletic models, who train for five hours a day, and drink broccoli smoothies for lunch, are shown using a machine for a couple of minutes, with the inference that the machine is the reason for their washboard abs.

The Quality formula is hundreds; if not thousands, of years old. Software development is just another context.

There are significant costs to doing real Quality, which is the main reason that more people don't do it.

One of the biggest costs, is that there isn't really that much money to be made, doing superb Quality. You get to sell to snooty customers, and feel smug, but there just ain't that many people that are willing to pay the premium for top Quality.

Dreck sells. People who get truly rich, seldom do so, selling Quality. The ones that do, have that endemic culture. It's really difficult (and expensive) to maintain that; especially at scale. Lots of humbling and hiring expensive, cranky old craftsmen that can be difficult to work with.

Lot of broccoli smoothies.