Your first bit is just tautological. Yes, healthy companies are healthy. The questionable part is your notion that 17% of investment is healthy.
As to the bit about Lean Manufacturing, you're just wrong. Toyota in particular is known for close relationships with suppliers where they are well supported and trained in Lean approaches as well.
As to the bit about Lean Manufacturing, you're just wrong. Toyota in particular is known for close relationships with suppliers where they are well supported and trained in Lean approaches as well.