I wasn't asking for anything. I wouldn't expect much help from Sonos, and, indeed, and the OP got what I'd expect.
If pressed, I'd wish at least an aspiring boutique manufacturer like Sonos would make service manuals and replacement parts available. But again, I wouldn't expect them to do that unless they were forced to. (And it may not have been viable or cost effective for the OP in any event.)
I don't think the expectation is to do it for free, but it sure would be nice if companies could repair their expensive products for less than the cost of a new system.
Modern electronics is just planned obsolescence + replacement.
Well, they didn't break it. Why should it be their responsibility to replace something they didn't break for free?
Now if the product was defective or something, sure, but this is asking way too much.