It is common to push suppliers for price reductions on existing and future agreements. But I have never heard of partial refunds on past sales.
Yes. The terms under which "New GM" took over the supplier contracts of "Old GM" come close. But that was a bankruptcy; the stockholders lost everything and the management lost their jobs.
Tesla doesn't buy enough to bully many suppliers like that. If you sell Tesla bolts or tires or coils of aluminum, Tesla is a minor part of your business. Only if your business is making some custom part for Tesla can this work. Tesla does much of their custom stuff in-house, so there probably aren't many suppliers whose main customer is Tesla.
Yes. The terms under which "New GM" took over the supplier contracts of "Old GM" come close. But that was a bankruptcy; the stockholders lost everything and the management lost their jobs.
Tesla doesn't buy enough to bully many suppliers like that. If you sell Tesla bolts or tires or coils of aluminum, Tesla is a minor part of your business. Only if your business is making some custom part for Tesla can this work. Tesla does much of their custom stuff in-house, so there probably aren't many suppliers whose main customer is Tesla.