Companies looking at this (eg Giant, Norco) should review their warranty wordings compared to Specialized’s. I bought a Norco last year and went to check the warranty wording vs a few others after reading the wysiwyg’s thread.
Fair enough to exclude damage caused by improper maintenance or fitting of incompatible parts – if you want to do that, say that, a la Spesh. If you want to make it clear who pays for labour, shipping, do that too.
Edit: @jameso calls this “serviced by authorised dealers only” language “fall back” language, but it’s worse than useless – it’s in conflict with standard practice, your distribution model, the instructions in your user guide, the tools you sell and the pictures on the your warranty page depicting your customers using them. A s soon one of your dealers or warranty managers relies on the words to repudiate a claim, it’s shown up to be laughable, and you’re forced back by media pressure or lawyers’ letters to a more reasonable position – and possibly into a corner of replacing something you could might have been able to deny due to improper maintenance or something.
Eventually though, wording or not, your warranty response will be known, and form part of your offering.