That would be a proof of concept that their current practices aren't justified, not only from a marketing standpoint but probably also from a legal standpoint.

That would be a proof of concept that their current practices aren't justified, not only from a marketing standpoint but probably also from a legal standpoint. The problem isn't providing replacement parts. I think the issue is that locking their customers in their maintenance services is part of their business model. Most likely the lifetime of service (decades) wouldn't easily be fitted into the margin of a specific model.