There are pre-conditions for products to be set up as JIT. As you mention, short lead times, but also things like high quality, high availability, and others as

There are pre-conditions for products to be set up as JIT. As you mention, short lead times, but also things like high quality, high availability, and others as well. Toyota and a lot of the concepts that come out of Toyota are ideals to strive for. It doesn’t mean everything is like that, which is hard to understand from just reading the lean literature.