Many people in the Agile and Lean communities love to talk about Toyota and how successful they became changing their process, reducing waste (or inventory), limiting work in progress (WIP), and all the great things they have done. That is what Agile coaches and consultancy companies like to sell to uninformed clients: the Toyota Dream. First, building cars is totally different from building software. We do not use a car if it is not totally finished. We do not go back to the manufacturer after buying a car and ask them to add an extra door to it or to move the engine from the front to the back.
When talking about Toyota, we very rarely think, “What if the cars were not good? What if no one wanted to buy them? What if they were so fragile and we had to take them to the garage every month?” An important factor to Toyota’s success was, besides a good process, the focus on the quality of their cars.
Customers wanted to buy their cars because they were well built and reliable. They wanted their cars because they were a good value for money. Customers wanted Toyota cars because they had quality. https://learning.oreilly.com/library/view/the-software-craftsman/9780134052625/ch02.xhtml#ch02lev1sec6