Ayre for many years had a line of Ayre branded premium cables manufactured by Cardas if my memory is correct.
Yes, the "Ayre" cables were sourced from Cardas. I think the speaker cables were essentially Golden Reference but in a different jacket. Looks like Ayre no longer offers these (judging by their website).
My thinking is that Ayre wouldn’t supply cables that are inadequate for their components.
Ayre would probably say that their OEM cable is "adequate" but add that you can get even better results with some aftermarket cables. I know they often show with Cardas, sometimes Audioquest (maybe others?). From their perspective, it isn’t sensible to include a $$$ power cord or IC with their components. For one thing, as was pointed out up-thread, they have no idea how long your cables need to be. Secondly, tastes and opinions of cables widely range. Some don’t think cables make any difference whatsoever while others insists on specific brands or technology. It would be tough to satisfy more than a minority of customers, and that's assuming the cable is even the proper length.