Cite what law requires this. While it may seem like a fine idea I
seriously
doubt there's legislation worded to require it.

I posted an answer at least a week ago.

It appears there is no Federal law, but many states require manufacturers
to at
least provide some "satisfactory" solution to service problems for a
period of
time after a product is discontinued.


That is so vague that it is unenforceable, unless you are talking about
products that are covered under warranty or extended service contracts.