This all started as a bit of a joke with a lumbering animal at the centre of it BUT a little light research reveals that yak's wool is combed from the animal, 20% warmer than merino and - importantly to TPFers - has the luxurious feel of cashmere and resists pilling. It is also unsuitable for mass manufacture so the elements of craft and exclusivity remain. People in the Himalaya and Mongolia are looking for sustainability for their traditional way of life and getting yak's wool out into the wider world is a big opportunity for them - better than tearing up vast swathes of Mongolia for the mineral wealth and leaving water-less scars in the landscape anyway. So, bring on the yak's wool!
Thank you, Les Tambours, for this important information. When I alluded to China, I was thinking that a new fiber opportunity would lead to mass manufacture, but you clarified that's unlikely to happen.
Do you happen to know why the yak fiber is not suited to mass manufacture? That's typically the case when production is not enough to sustain large-scale manufacture. I hope that that situation doesn't lead to yak "farming" like salmon has been farmed to increase quantity--but at loss of quality compared to wild salmon. However, dotting the plains of Mongolia with yak farms sounds better than tearing up the landscape for mineral resources.