They do make induction stoves for woks, if you wanted to use woks in a commercial kitchen you would get a specialty stove much like specialty gas stoves are used for them now.
Edit: Now I notice the "Referral payout" column. I guess that means I get something too, but I didn't think that was the case when posting the link originally.
Bandwidth is expensive and videos take up way more bandwidth than text. I'd say it would be pretty much impossible to run something like YouTube, on that big of a scale, solely on donations.